91930092 has 12 divisors (see below), whose sum is σ = 214503576. Its totient is φ = 30643360.

The previous prime is 91930061. The next prime is 91930109. The reversal of 91930092 is 29003919.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×91930092² = 16902283630256928, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3830409 + ... + 3830432.

It is an arithmetic number, because the mean of its divisors is an integer number (17875298).

Almost surely, 2^91930092 is an apocalyptic number.

It is an amenable number.

91930092 is an abundant number, since it is smaller than the sum of its proper divisors (122573484).

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

91930092 is a wasteful number, since it uses less digits than its factorization.

91930092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7660848 (or 7660846 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 91930092 is about 9588.0181476674. The cubic root of 91930092 is about 451.3213704789.

The spelling of 91930092 in words is "ninety-one million, nine hundred thirty thousand, ninety-two".