91945412 has 12 divisors (see below), whose sum is σ = 173281836. Its totient is φ = 42436320.

The previous prime is 91945409. The next prime is 91945417. The reversal of 91945412 is 21454919.

It can be written as a sum of positive squares in 2 ways, for example, as 7929856 + 84015556 = 2816^2 + 9166^2 .

It is not an unprimeable number, because it can be changed into a prime (91945417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884039 + ... + 884142.

It is an arithmetic number, because the mean of its divisors is an integer number (14440153).

Almost surely, 2^91945412 is an apocalyptic number.

It is an amenable number.

91945412 is a deficient number, since it is larger than the sum of its proper divisors (81336424).

91945412 is a wasteful number, since it uses less digits than its factorization.

91945412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768198 (or 1768196 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 91945412 is about 9588.8170281844. The cubic root of 91945412 is about 451.3464397433.

The spelling of 91945412 in words is "ninety-one million, nine hundred forty-five thousand, four hundred twelve".