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8906401 = 71272343
BaseRepresentation
bin100001111110…
…011010100001
3121202111021201
4201332122201
54240001101
6514521201
7135463120
oct41763241
917674251
108906401
115033569
122b96201
131acab7a
14127bab7
15bade01
hex87e6a1

8906401 has 4 divisors (see below), whose sum is σ = 10178752. Its totient is φ = 7634052.

The previous prime is 8906399. The next prime is 8906407. The reversal of 8906401 is 1046098.

8906401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1046098 = 2523049.

It is a cyclic number.

It is not a de Polignac number, because 8906401 - 21 = 8906399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8906401.

It is not an unprimeable number, because it can be changed into a prime (8906407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636165 + ... + 636178.

It is an arithmetic number, because the mean of its divisors is an integer number (2544688).

Almost surely, 28906401 is an apocalyptic number.

It is an amenable number.

8906401 is a deficient number, since it is larger than the sum of its proper divisors (1272351).

8906401 is a wasteful number, since it uses less digits than its factorization.

8906401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272350.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 8906401 is about 2984.3593952472. The cubic root of 8906401 is about 207.2847799951.

The spelling of 8906401 in words is "eight million, nine hundred six thousand, four hundred one".

Divisors: 1 7 1272343 8906401