91964445 has 16 divisors (see below), whose sum is σ = 151890432. Its totient is φ = 47465280.

The previous prime is 91964417. The next prime is 91964447. The reversal of 91964445 is 54446919.

It is not a de Polignac number, because 91964445 - 2⁵ = 91964413 is a prime.

It is a super-3 number, since 3×91964445³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91964397 and 91964406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91964447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98422 + ... + 99351.

It is an arithmetic number, because the mean of its divisors is an integer number (9493152).

Almost surely, 2^91964445 is an apocalyptic number.

It is an amenable number.

91964445 is a deficient number, since it is larger than the sum of its proper divisors (59925987).

91964445 is a wasteful number, since it uses less digits than its factorization.

91964445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197812.

The product of its digits is 155520, while the sum is 42.

The square root of 91964445 is about 9589.8094350201. The cubic root of 91964445 is about 451.3775809894.

The spelling of 91964445 in words is "ninety-one million, nine hundred sixty-four thousand, four hundred forty-five".