47909538 has 12 divisors (see below), whose sum is σ = 103804038. Its totient is φ = 15969840.

The previous prime is 47909527. The next prime is 47909549. The reversal of 47909538 is 83590974.

It is an interprime number because it is at equal distance from previous prime (47909527) and next prime (47909549).

It can be written as a sum of positive squares in only one way, i.e., 36397089 + 11512449 = 6033^2 + 3393^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47909493 and 47909502.

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, 1330803 + ... + 1330838.

Almost surely, 2^47909538 is an apocalyptic number.

47909538 is an abundant number, since it is smaller than the sum of its proper divisors (55894500).

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

47909538 is a wasteful number, since it uses less digits than its factorization.

47909538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661649 (or 2661646 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 47909538 is about 6921.6716189083. The cubic root of 47909538 is about 363.1956689325.

The spelling of 47909538 in words is "forty-seven million, nine hundred nine thousand, five hundred thirty-eight".