47639964 has 12 divisors (see below), whose sum is σ = 111159944. Its totient is φ = 15879984.

The previous prime is 47639947. The next prime is 47639971. The reversal of 47639964 is 46993674.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1984987 + ... + 1985010.

Almost surely, 2^47639964 is an apocalyptic number.

It is an amenable number.

47639964 is an abundant number, since it is smaller than the sum of its proper divisors (63519980).

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

47639964 is a wasteful number, since it uses less digits than its factorization.

47639964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970004 (or 3970002 counting only the distinct ones).

The product of its digits is 979776, while the sum is 48.

The square root of 47639964 is about 6902.1709628203. The cubic root of 47639964 is about 362.5131860443.

The spelling of 47639964 in words is "forty-seven million, six hundred thirty-nine thousand, nine hundred sixty-four".