47959891 has 16 divisors (see below), whose sum is σ = 55756800. Its totient is φ = 40406688.

The previous prime is 47959843. The next prime is 47959897. The reversal of 47959891 is 19895974.

It is not a de Polignac number, because 47959891 - 2⁷ = 47959763 is a prime.

It is a super-2 number, since 2×47959891² = 4600302289463762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47959897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182226 + ... + 182488.

It is an arithmetic number, because the mean of its divisors is an integer number (3484800).

Almost surely, 2^47959891 is an apocalyptic number.

47959891 is a deficient number, since it is larger than the sum of its proper divisors (7796909).

47959891 is a wasteful number, since it uses less digits than its factorization.

47959891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618.

The product of its digits is 816480, while the sum is 52.

The square root of 47959891 is about 6925.3080075907. The cubic root of 47959891 is about 363.3228641224.

The spelling of 47959891 in words is "forty-seven million, nine hundred fifty-nine thousand, eight hundred ninety-one".