47157899 has 2 divisors, whose sum is σ = 47157900. Its totient is φ = 47157898.

The previous prime is 47157893. The next prime is 47157907. The reversal of 47157899 is 99875174.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47157899 is a prime.

It is not a weakly prime, because it can be changed into another prime (47157893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23578949 + 23578950.

It is an arithmetic number, because the mean of its divisors is an integer number (23578950).

Almost surely, 2^47157899 is an apocalyptic number.

47157899 is a deficient number, since it is larger than the sum of its proper divisors (1).

47157899 is an equidigital number, since it uses as much as digits as its factorization.

47157899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 50.

The square root of 47157899 is about 6867.1609126334. The cubic root of 47157899 is about 361.2862910584.

The spelling of 47157899 in words is "forty-seven million, one hundred fifty-seven thousand, eight hundred ninety-nine".