47643894 has 24 divisors (see below), whose sum is σ = 109301400. Its totient is φ = 14947008.

The previous prime is 47643881. The next prime is 47643907. The reversal of 47643894 is 49834674.

It is an interprime number because it is at equal distance from previous prime (47643881) and next prime (47643907).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77544 + ... + 78155.

It is an arithmetic number, because the mean of its divisors is an integer number (4554225).

Almost surely, 2^47643894 is an apocalyptic number.

47643894 is an abundant number, since it is smaller than the sum of its proper divisors (61657506).

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

47643894 is a wasteful number, since it uses less digits than its factorization.

47643894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155724 (or 155721 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 47643894 is about 6902.4556499843. The cubic root of 47643894 is about 362.5231541294.

The spelling of 47643894 in words is "forty-seven million, six hundred forty-three thousand, eight hundred ninety-four".