47393418 has 16 divisors (see below), whose sum is σ = 95657760. Its totient is φ = 15652656.

The previous prime is 47393407. The next prime is 47393441. The reversal of 47393418 is 81439374.

It is a super-2 number, since 2×47393418² = 4492272139445448, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35580 + ... + 36887.

It is an arithmetic number, because the mean of its divisors is an integer number (5978610).

Almost surely, 2^47393418 is an apocalyptic number.

47393418 is an abundant number, since it is smaller than the sum of its proper divisors (48264342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47393418 is a wasteful number, since it uses less digits than its factorization.

47393418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72581.

The product of its digits is 72576, while the sum is 39.

The square root of 47393418 is about 6884.2877627246. The cubic root of 47393418 is about 361.8867456015.

The spelling of 47393418 in words is "forty-seven million, three hundred ninety-three thousand, four hundred eighteen".