47923697 has 18 divisors (see below), whose sum is σ = 53781462. Its totient is φ = 42552576.

The previous prime is 47923669. The next prime is 47923699. The reversal of 47923697 is 79632974.

It can be written as a sum of positive squares in 3 ways, for example, as 15649936 + 32273761 = 3956^2 + 5681^2 .

It is not a de Polignac number, because 47923697 - 2⁸ = 47923441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47923699) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 656453 + ... + 656525.

It is an arithmetic number, because the mean of its divisors is an integer number (2987859).

Almost surely, 2^47923697 is an apocalyptic number.

It is an amenable number.

47923697 is a deficient number, since it is larger than the sum of its proper divisors (5857765).

47923697 is an equidigital number, since it uses as much as digits as its factorization.

47923697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 113 counting only the distinct ones).

The product of its digits is 571536, while the sum is 47.

The square root of 47923697 is about 6922.6943454121. The cubic root of 47923697 is about 363.2314445573.

The spelling of 47923697 in words is "forty-seven million, nine hundred twenty-three thousand, six hundred ninety-seven".