47311399 has 2 divisors, whose sum is σ = 47311400. Its totient is φ = 47311398.

The previous prime is 47311393. The next prime is 47311403. The reversal of 47311399 is 99311374.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47311399 - 2²³ = 38922791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47311393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23655699 + 23655700.

It is an arithmetic number, because the mean of its divisors is an integer number (23655700).

Almost surely, 2^47311399 is an apocalyptic number.

47311399 is a deficient number, since it is larger than the sum of its proper divisors (1).

47311399 is an equidigital number, since it uses as much as digits as its factorization.

47311399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 47311399 is about 6878.3282125819. The cubic root of 47311399 is about 361.6778647834.

The spelling of 47311399 in words is "forty-seven million, three hundred eleven thousand, three hundred ninety-nine".