91877956 has 24 divisors (see below), whose sum is σ = 167855576. Its totient is φ = 43960320.

The previous prime is 91877923. The next prime is 91877959. The reversal of 91877956 is 65977819.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13838400 + 78039556 = 3720^2 + 8834^2 .

It is not an unprimeable number, because it can be changed into a prime (91877959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3940 + ... + 14116.

Almost surely, 2^91877956 is an apocalyptic number.

It is an amenable number.

91877956 is a deficient number, since it is larger than the sum of its proper divisors (75977620).

91877956 is a wasteful number, since it uses less digits than its factorization.

91877956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10279 (or 10277 counting only the distinct ones).

The product of its digits is 952560, while the sum is 52.

The square root of 91877956 is about 9585.2989520411. The cubic root of 91877956 is about 451.2360355610.

The spelling of 91877956 in words is "ninety-one million, eight hundred seventy-seven thousand, nine hundred fifty-six".