47693631 has 4 divisors (see below), whose sum is σ = 63591512. Its totient is φ = 31795752.

The previous prime is 47693627. The next prime is 47693641. The reversal of 47693631 is 13639674.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 47693631 - 2² = 47693627 is a prime.

It is a super-2 number, since 2×47693631² = 4549364875928322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47693631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47693641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7948936 + ... + 7948941.

It is an arithmetic number, because the mean of its divisors is an integer number (15897878).

Almost surely, 2^47693631 is an apocalyptic number.

47693631 is a deficient number, since it is larger than the sum of its proper divisors (15897881).

47693631 is a wasteful number, since it uses less digits than its factorization.

47693631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15897880.

The product of its digits is 81648, while the sum is 39.

The square root of 47693631 is about 6906.0575584048. The cubic root of 47693631 is about 362.6492601347.

The spelling of 47693631 in words is "forty-seven million, six hundred ninety-three thousand, six hundred thirty-one".