47440731 has 16 divisors (see below), whose sum is σ = 69783840. Its totient is φ = 28481280.

The previous prime is 47440721. The next prime is 47440741. The reversal of 47440731 is 13704474.

It is an interprime number because it is at equal distance from previous prime (47440721) and next prime (47440741).

It is not a de Polignac number, because 47440731 - 2⁵ = 47440699 is a prime.

It is a super-2 number, since 2×47440731² = 4501245915628722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47440711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13236 + ... + 16433.

It is an arithmetic number, because the mean of its divisors is an integer number (4361490).

Almost surely, 2^47440731 is an apocalyptic number.

47440731 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

47440731 is a deficient number, since it is larger than the sum of its proper divisors (22343109).

47440731 is a wasteful number, since it uses less digits than its factorization.

47440731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29726.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 47440731 is about 6887.7232087243. The cubic root of 47440731 is about 362.0071297803.

The spelling of 47440731 in words is "forty-seven million, four hundred forty thousand, seven hundred thirty-one".