47999731 has 8 divisors (see below), whose sum is σ = 52071264. Its totient is φ = 43982400.

The previous prime is 47999723. The next prime is 47999753. The reversal of 47999731 is 13799974.

It is a happy number.

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 47999731 - 2³ = 47999723 is a prime.

It is a super-2 number, since 2×47999731² = 4607948352144722, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (47999701) 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, 11695 + ... + 15256.

It is an arithmetic number, because the mean of its divisors is an integer number (6508908).

Almost surely, 2^47999731 is an apocalyptic number.

47999731 is a deficient number, since it is larger than the sum of its proper divisors (4071533).

47999731 is a wasteful number, since it uses less digits than its factorization.

47999731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27101.

The product of its digits is 428652, while the sum is 49.

The square root of 47999731 is about 6928.1838168455. The cubic root of 47999731 is about 363.4234396687.

It can be divided in two parts, 4799973 and 1, that added together give a palindrome (4799974).

The spelling of 47999731 in words is "forty-seven million, nine hundred ninety-nine thousand, seven hundred thirty-one".