91627947 has 12 divisors (see below), whose sum is σ = 135929040. Its totient is φ = 59434128.

The previous prime is 91627891. The next prime is 91627951. The reversal of 91627947 is 74972619.

It is not a de Polignac number, because 91627947 - 2⁸ = 91627691 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (91627247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137247 + ... + 137912.

It is an arithmetic number, because the mean of its divisors is an integer number (11327420).

Almost surely, 2^91627947 is an apocalyptic number.

91627947 is a deficient number, since it is larger than the sum of its proper divisors (44301093).

91627947 is a wasteful number, since it uses less digits than its factorization.

91627947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275202 (or 275199 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 91627947 is about 9572.2487953458. The cubic root of 91627947 is about 450.8263778112.

The spelling of 91627947 in words is "ninety-one million, six hundred twenty-seven thousand, nine hundred forty-seven".