91479670 has 8 divisors (see below), whose sum is σ = 164663424. Its totient is φ = 36591864.

The previous prime is 91479649. The next prime is 91479679. The reversal of 91479670 is 7697419.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91479679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4573974 + ... + 4573993.

It is an arithmetic number, because the mean of its divisors is an integer number (20582928).

Almost surely, 2^91479670 is an apocalyptic number.

91479670 is a deficient number, since it is larger than the sum of its proper divisors (73183754).

91479670 is a wasteful number, since it uses less digits than its factorization.

91479670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9147974.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 91479670 is about 9564.5005096973. The cubic root of 91479670 is about 450.5830631313.

The spelling of 91479670 in words is "ninety-one million, four hundred seventy-nine thousand, six hundred seventy".