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84080961 = 3213967211
BaseRepresentation
bin1010000001011…
…11100101000001
312212012202101200
411000233211001
5133011042321
612202051413
72040450666
oct500574501
9185182350
1084080961
11435092a8
12241a9b69
131455ba63
14b249a6d
1575acd26
hex502f941

84080961 has 12 divisors (see below), whose sum is σ = 122325840. Its totient is φ = 55649880.

The previous prime is 84080923. The next prime is 84080987. The reversal of 84080961 is 16908048.

It is a happy number.

It is not a de Polignac number, because 84080961 - 215 = 84048193 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84080911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32355 + ... + 34856.

It is an arithmetic number, because the mean of its divisors is an integer number (10193820).

Almost surely, 284080961 is an apocalyptic number.

It is an amenable number.

84080961 is a deficient number, since it is larger than the sum of its proper divisors (38244879).

84080961 is a wasteful number, since it uses less digits than its factorization.

84080961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67356 (or 67353 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 84080961 is about 9169.5671108292. The cubic root of 84080961 is about 438.0925712888.

The spelling of 84080961 in words is "eighty-four million, eighty thousand, nine hundred sixty-one".

Divisors: 1 3 9 139 417 1251 67211 201633 604899 9342329 28026987 84080961