91444861400 has 24 divisors (see below), whose sum is σ = 212609303220. Its totient is φ = 36577944480.

The previous prime is 91444861399. The next prime is 91444861427. The reversal of 91444861400 is 416844419.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228611954 + ... + 228612353.

Almost surely, 2^91444861400 is an apocalyptic number.

It is an amenable number.

91444861400 is an abundant number, since it is smaller than the sum of its proper divisors (121164441820).

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

91444861400 is a wasteful number, since it uses less digits than its factorization.

91444861400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457224323 (or 457224314 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 91444861400 in words is "ninety-one billion, four hundred forty-four million, eight hundred sixty-one thousand, four hundred".