47931407 has 4 divisors (see below), whose sum is σ = 47948040. Its totient is φ = 47914776.

The previous prime is 47931371. The next prime is 47931409. The reversal of 47931407 is 70413974.

47931407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47931407 - 2⁸ = 47931151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47931409) 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 3 ways as a sum of consecutive naturals, for example, 2753 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (11987010).

Almost surely, 2^47931407 is an apocalyptic number.

47931407 is a deficient number, since it is larger than the sum of its proper divisors (16633).

47931407 is a wasteful number, since it uses less digits than its factorization.

47931407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16632.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 47931407 is about 6923.2511871230. The cubic root of 47931407 is about 363.2509224944.

The spelling of 47931407 in words is "forty-seven million, nine hundred thirty-one thousand, four hundred seven".