47491644 has 12 divisors (see below), whose sum is σ = 110813864. Its totient is φ = 15830544.

The previous prime is 47491601. The next prime is 47491673. The reversal of 47491644 is 44619474.

47491644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1978807 + ... + 1978830.

Almost surely, 2^47491644 is an apocalyptic number.

It is an amenable number.

47491644 is an abundant number, since it is smaller than the sum of its proper divisors (63322220).

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

47491644 is a wasteful number, since it uses less digits than its factorization.

47491644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957644 (or 3957642 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 47491644 is about 6891.4181414278. The cubic root of 47491644 is about 362.1365845003.

The spelling of 47491644 in words is "forty-seven million, four hundred ninety-one thousand, six hundred forty-four".