91900494 has 40 divisors (see below), whose sum is σ = 235345968. Its totient is φ = 26256960.

The previous prime is 91900477. The next prime is 91900499. The reversal of 91900494 is 49400919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91900499) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39387 + ... + 41654.

Almost surely, 2^91900494 is an apocalyptic number.

91900494 is an abundant number, since it is smaller than the sum of its proper divisors (143445474).

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

91900494 is a wasteful number, since it uses less digits than its factorization.

91900494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81062 (or 81053 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 91900494 is about 9586.4745344678. The cubic root of 91900494 is about 451.2729291633.

The spelling of 91900494 in words is "ninety-one million, nine hundred thousand, four hundred ninety-four".