47979459 has 20 divisors (see below), whose sum is σ = 78190200. Its totient is φ = 29077920.

The previous prime is 47979439. The next prime is 47979467. The reversal of 47979459 is 95497974.

It is not a de Polignac number, because 47979459 - 2²⁰ = 46930883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47979409) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26034 + ... + 27815.

It is an arithmetic number, because the mean of its divisors is an integer number (3909510).

Almost surely, 2^47979459 is an apocalyptic number.

47979459 is a deficient number, since it is larger than the sum of its proper divisors (30210741).

47979459 is a wasteful number, since it uses less digits than its factorization.

47979459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53872 (or 53863 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 47979459 is about 6926.7206526610. The cubic root of 47979459 is about 363.3722702335.

The spelling of 47979459 in words is "forty-seven million, nine hundred seventy-nine thousand, four hundred fifty-nine".