91940424 has 32 divisors (see below), whose sum is σ = 230202240. Its totient is φ = 30600000.

The previous prime is 91940417. The next prime is 91940479. The reversal of 91940424 is 42404919.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15474 + ... + 20574.

It is an arithmetic number, because the mean of its divisors is an integer number (7193820).

Almost surely, 2^91940424 is an apocalyptic number.

It is an amenable number.

91940424 is an abundant number, since it is smaller than the sum of its proper divisors (138261816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91940424 is a wasteful number, since it uses less digits than its factorization.

91940424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5861 (or 5857 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 91940424 is about 9588.5569300078. The cubic root of 91940424 is about 451.3382778108.

The spelling of 91940424 in words is "ninety-one million, nine hundred forty thousand, four hundred twenty-four".