47958418 has 4 divisors (see below), whose sum is σ = 71937630. Its totient is φ = 23979208.

The previous prime is 47958389. The next prime is 47958433. The reversal of 47958418 is 81485974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81485974 = 2 ⋅40742987.

It can be written as a sum of positive squares in only one way, i.e., 40157569 + 7800849 = 6337^2 + 2793^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11989603 + ... + 11989606.

Almost surely, 2^47958418 is an apocalyptic number.

47958418 is a deficient number, since it is larger than the sum of its proper divisors (23979212).

47958418 is a wasteful number, since it uses less digits than its factorization.

47958418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23979211.

The product of its digits is 322560, while the sum is 46.

The square root of 47958418 is about 6925.2016577137. The cubic root of 47958418 is about 363.3191444861.

The spelling of 47958418 in words is "forty-seven million, nine hundred fifty-eight thousand, four hundred eighteen".