47919994 has 12 divisors (see below), whose sum is σ = 75142746. Its totient is φ = 22917752.

The previous prime is 47919983. The next prime is 47920009. The reversal of 47919994 is 49991974.

It can be written as a sum of positive squares in only one way, i.e., 38278969 + 9641025 = 6187^2 + 3105^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21589 + ... + 23704.

Almost surely, 2^47919994 is an apocalyptic number.

47919994 is a deficient number, since it is larger than the sum of its proper divisors (27222752).

47919994 is a wasteful number, since it uses less digits than its factorization.

47919994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45341 (or 45318 counting only the distinct ones).

The product of its digits is 734832, while the sum is 52.

The square root of 47919994 is about 6922.4268865767. The cubic root of 47919994 is about 363.2220888469. Note that the first 3 decimals are identical.

The spelling of 47919994 in words is "forty-seven million, nine hundred nineteen thousand, nine hundred ninety-four".