47493931 has 4 divisors (see below), whose sum is σ = 48095200. Its totient is φ = 46892664.

The previous prime is 47493917. The next prime is 47493947. The reversal of 47493931 is 13939474.

It is a happy number.

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 47493931 - 2¹¹ = 47491883 is a prime.

It is a super-2 number, since 2×47493931² = 4511346963665522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47493961) 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, 300516 + ... + 300673.

It is an arithmetic number, because the mean of its divisors is an integer number (12023800).

Almost surely, 2^47493931 is an apocalyptic number.

47493931 is a deficient number, since it is larger than the sum of its proper divisors (601269).

47493931 is an equidigital number, since it uses as much as digits as its factorization.

47493931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601268.

The product of its digits is 81648, while the sum is 40.

The square root of 47493931 is about 6891.5840704442. The cubic root of 47493931 is about 362.1423974041.

The spelling of 47493931 in words is "forty-seven million, four hundred ninety-three thousand, nine hundred thirty-one".