47739631 has 4 divisors (see below), whose sum is σ = 47916064. Its totient is φ = 47563200.

The previous prime is 47739613. The next prime is 47739641. The reversal of 47739631 is 13693774.

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

It is a cyclic number.

It is not a de Polignac number, because 47739631 - 2⁹ = 47739119 is a prime.

It is a super-2 number, since 2×47739631² = 4558144736032322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47739641) 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, 87810 + ... + 88351.

It is an arithmetic number, because the mean of its divisors is an integer number (11979016).

Almost surely, 2^47739631 is an apocalyptic number.

47739631 is a deficient number, since it is larger than the sum of its proper divisors (176433).

47739631 is a wasteful number, since it uses less digits than its factorization.

47739631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176432.

The product of its digits is 95256, while the sum is 40.

The square root of 47739631 is about 6909.3871652991. The cubic root of 47739631 is about 362.7658131232.

The spelling of 47739631 in words is "forty-seven million, seven hundred thirty-nine thousand, six hundred thirty-one".