47639794 has 8 divisors (see below), whose sum is σ = 73391148. Its totient is φ = 23176080.

The previous prime is 47639771. The next prime is 47639803. The reversal of 47639794 is 49793674.

It can be written as a sum of positive squares in 2 ways, for example, as 40005625 + 7634169 = 6325^2 + 2763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 321817 + ... + 321964.

Almost surely, 2^47639794 is an apocalyptic number.

47639794 is a deficient number, since it is larger than the sum of its proper divisors (25751354).

47639794 is a wasteful number, since it uses less digits than its factorization.

47639794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643820.

The product of its digits is 1143072, while the sum is 49.

The square root of 47639794 is about 6902.1586478434. The cubic root of 47639794 is about 362.5127548425.

The spelling of 47639794 in words is "forty-seven million, six hundred thirty-nine thousand, seven hundred ninety-four".