47399531 has 8 divisors (see below), whose sum is σ = 48106800. Its totient is φ = 46696320.

The previous prime is 47399503. The next prime is 47399537. The reversal of 47399531 is 13599374.

47399531 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 a de Polignac number, because none of the positive numbers 2^k-47399531 is a prime.

It is a super-2 number, since 2×47399531² = 4493431078039922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47399537) 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, 28655 + ... + 30263.

It is an arithmetic number, because the mean of its divisors is an integer number (6013350).

Almost surely, 2^47399531 is an apocalyptic number.

47399531 is a deficient number, since it is larger than the sum of its proper divisors (707269).

47399531 is a wasteful number, since it uses less digits than its factorization.

47399531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029.

The product of its digits is 102060, while the sum is 41.

The square root of 47399531 is about 6884.7317304308. The cubic root of 47399531 is about 361.9023041513.

The spelling of 47399531 in words is "forty-seven million, three hundred ninety-nine thousand, five hundred thirty-one".