91039434 has 32 divisors (see below), whose sum is σ = 188383104. Its totient is φ = 29310720.

The previous prime is 91039411. The next prime is 91039441. The reversal of 91039434 is 43493019.

It is a junction number, because it is equal to n+sod(n) for n = 91039395 and 91039404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23542 + ... + 27134.

It is an arithmetic number, because the mean of its divisors is an integer number (5886972).

Almost surely, 2^91039434 is an apocalyptic number.

91039434 is an abundant number, since it is smaller than the sum of its proper divisors (97343670).

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

91039434 is a wasteful number, since it uses less digits than its factorization.

91039434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 91039434 is about 9541.4586935122. The cubic root of 91039434 is about 449.8591065086.

The spelling of 91039434 in words is "ninety-one million, thirty-nine thousand, four hundred thirty-four".