47477731 has 8 divisors (see below), whose sum is σ = 54501120. Its totient is φ = 40514568.

The previous prime is 47477707. The next prime is 47477767. The reversal of 47477731 is 13777474.

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 47477731 - 2⁷ = 47477603 is a prime.

It is a super-2 number, since 2×47477731² = 4508269881816722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47477791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13351 + ... + 16528.

It is an arithmetic number, because the mean of its divisors is an integer number (6812640).

Almost surely, 2^47477731 is an apocalyptic number.

47477731 is a deficient number, since it is larger than the sum of its proper divisors (7023389).

47477731 is a wasteful number, since it uses less digits than its factorization.

47477731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30113.

The product of its digits is 115248, while the sum is 40.

The square root of 47477731 is about 6890.4086235868. The cubic root of 47477731 is about 362.1012175882.

The spelling of 47477731 in words is "forty-seven million, four hundred seventy-seven thousand, seven hundred thirty-one".