91407996 has 36 divisors (see below), whose sum is σ = 232890112. Its totient is φ = 30227904.

The previous prime is 91407973. The next prime is 91408007. The reversal of 91407996 is 69970419.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5425 + ... + 14568.

Almost surely, 2^91407996 is an apocalyptic number.

It is an amenable number.

91407996 is an abundant number, since it is smaller than the sum of its proper divisors (141482116).

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

91407996 is a wasteful number, since it uses less digits than its factorization.

91407996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20130 (or 20125 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 91407996 is about 9560.7528992229. The cubic root of 91407996 is about 450.4653556359.

The spelling of 91407996 in words is "ninety-one million, four hundred seven thousand, nine hundred ninety-six".