47131929 has 32 divisors (see below), whose sum is σ = 76823040. Its totient is φ = 28377216.

The previous prime is 47131921. The next prime is 47131937. The reversal of 47131929 is 92913174.

It is an interprime number because it is at equal distance from previous prime (47131921) and next prime (47131937).

It is not a de Polignac number, because 47131929 - 2³ = 47131921 is a prime.

It is a super-2 number, since 2×47131929² = 4442837462522082, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47131893 and 47131902.

It is not an unprimeable number, because it can be changed into a prime (47131921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15069 + ... + 17925.

It is an arithmetic number, because the mean of its divisors is an integer number (2400720).

Almost surely, 2^47131929 is an apocalyptic number.

It is an amenable number.

47131929 is a deficient number, since it is larger than the sum of its proper divisors (29691111).

47131929 is a wasteful number, since it uses less digits than its factorization.

47131929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926 (or 2920 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 47131929 is about 6865.2697689166. The cubic root of 47131929 is about 361.2199583899.

It can be divided in two parts, 471 and 31929, that added together give a square (32400 = 180²).

The spelling of 47131929 in words is "forty-seven million, one hundred thirty-one thousand, nine hundred twenty-nine".