91912406 has 8 divisors (see below), whose sum is σ = 141231384. Its totient is φ = 44835280.

The previous prime is 91912391. The next prime is 91912453. The reversal of 91912406 is 60421919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 560360 + ... + 560523.

It is an arithmetic number, because the mean of its divisors is an integer number (17653923).

Almost surely, 2^91912406 is an apocalyptic number.

91912406 is a deficient number, since it is larger than the sum of its proper divisors (49318978).

91912406 is a wasteful number, since it uses less digits than its factorization.

91912406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120926.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 91912406 is about 9587.0958063430. The cubic root of 91912406 is about 451.2924260875.

The spelling of 91912406 in words is "ninety-one million, nine hundred twelve thousand, four hundred six".