91239035364 has 135 divisors (see below), whose sum is σ = 242402270187. Its totient is φ = 29925490176.

The previous prime is 91239035353. The next prime is 91239035401. The reversal of 91239035364 is 46353093219.

The square root of 91239035364 is 302058.

It is a perfect power (a square), and thus also a powerful number.

91239035364 is a `hidden beast` number, since 9 + 1 + 23 + 90 + 3 + 536 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 15789932964 + 75449102400 = 125658^2 + 274680^2 .

It is a super-2 number, since 2×91239035364² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 527393182 + ... + 527393354.

Almost surely, 2^91239035364 is an apocalyptic number.

91239035364 is the 302058-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91239035364

91239035364 is an abundant number, since it is smaller than the sum of its proper divisors (151163234823).

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

91239035364 is an equidigital number, since it uses as much as digits as its factorization.

91239035364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The spelling of 91239035364 in words is "ninety-one billion, two hundred thirty-nine million, thirty-five thousand, three hundred sixty-four".