47418169 has 2 divisors, whose sum is σ = 47418170. Its totient is φ = 47418168.

The previous prime is 47418143. The next prime is 47418179. The reversal of 47418169 is 96181474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43731769 + 3686400 = 6613^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 47418169 - 2²⁵ = 13863737 is a prime.

It is a super-2 number, since 2×47418169² = 4496965502625122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (47418179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23709084 + 23709085.

It is an arithmetic number, because the mean of its divisors is an integer number (23709085).

Almost surely, 2^47418169 is an apocalyptic number.

It is an amenable number.

47418169 is a deficient number, since it is larger than the sum of its proper divisors (1).

47418169 is an equidigital number, since it uses as much as digits as its factorization.

47418169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 47418169 is about 6886.0851722877. The cubic root of 47418169 is about 361.9497325479.

The spelling of 47418169 in words is "forty-seven million, four hundred eighteen thousand, one hundred sixty-nine".