47909938 has 16 divisors (see below), whose sum is σ = 72701856. Its totient is φ = 23677920.

The previous prime is 47909929. The next prime is 47909977. The reversal of 47909938 is 83990974.

It is a junction number, because it is equal to n+sod(n) for n = 47909891 and 47909900.

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, 91345 + ... + 91867.

It is an arithmetic number, because the mean of its divisors is an integer number (4543866).

Almost surely, 2^47909938 is an apocalyptic number.

47909938 is a deficient number, since it is larger than the sum of its proper divisors (24791918).

47909938 is a wasteful number, since it uses less digits than its factorization.

47909938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 47909938 is about 6921.7005136021. The cubic root of 47909938 is about 363.1966797115.

The spelling of 47909938 in words is "forty-seven million, nine hundred nine thousand, nine hundred thirty-eight".