91986136 has 24 divisors (see below), whose sum is σ = 189580860. Its totient is φ = 41811440.

The previous prime is 91986127. The next prime is 91986137. The reversal of 91986136 is 63168919.

It is a super-2 number, since 2×91986136² = 16922898432420992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91986092 and 91986101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91986137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46546 + ... + 48481.

Almost surely, 2^91986136 is an apocalyptic number.

It is an amenable number.

91986136 is an abundant number, since it is smaller than the sum of its proper divisors (97594724).

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

91986136 is a wasteful number, since it uses less digits than its factorization.

91986136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95055 (or 95040 counting only the distinct ones).

The product of its digits is 69984, while the sum is 43.

The square root of 91986136 is about 9590.9403084369. The cubic root of 91986136 is about 451.4130659403.

The spelling of 91986136 in words is "ninety-one million, nine hundred eighty-six thousand, one hundred thirty-six".