47289931 has 8 divisors (see below), whose sum is σ = 51120720. Its totient is φ = 43486752.

The previous prime is 47289929. The next prime is 47289947. The reversal of 47289931 is 13998274.

47289931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 47289931 - 2¹ = 47289929 is a prime.

It is a super-2 number, since 2×47289931² = 4472675147969522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47289901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3265 + ... + 10258.

It is an arithmetic number, because the mean of its divisors is an integer number (6390090).

Almost surely, 2^47289931 is an apocalyptic number.

47289931 is a deficient number, since it is larger than the sum of its proper divisors (3830789).

47289931 is a wasteful number, since it uses less digits than its factorization.

47289931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13805.

The product of its digits is 108864, while the sum is 43.

The square root of 47289931 is about 6876.7674818915. The cubic root of 47289931 is about 361.6231515764.

The spelling of 47289931 in words is "forty-seven million, two hundred eighty-nine thousand, nine hundred thirty-one".