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8340913 = 71191559
BaseRepresentation
bin11111110100010110110001
3120200202120201
4133310112301
54113402123
6454435201
7130616350
oct37642661
916622521
108340913
114787719
122962b01
131960669
141171997
15aeb5ad
hex7f45b1

8340913 has 4 divisors (see below), whose sum is σ = 9532480. Its totient is φ = 7149348.

The previous prime is 8340911. The next prime is 8340961. The reversal of 8340913 is 3190438.

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: 3190438 = 21595219.

It is a cyclic number.

It is not a de Polignac number, because 8340913 - 21 = 8340911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8340911) 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, 595773 + ... + 595786.

It is an arithmetic number, because the mean of its divisors is an integer number (2383120).

Almost surely, 28340913 is an apocalyptic number.

It is an amenable number.

8340913 is a deficient number, since it is larger than the sum of its proper divisors (1191567).

8340913 is a wasteful number, since it uses less digits than its factorization.

8340913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191566.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 8340913 is about 2888.0638843350. The cubic root of 8340913 is about 202.8015159772.

The spelling of 8340913 in words is "eight million, three hundred forty thousand, nine hundred thirteen".

Divisors: 1 7 1191559 8340913