47640044 has 12 divisors (see below), whose sum is σ = 85309224. Its totient is φ = 23265984.

The previous prime is 47640037. The next prime is 47640059. The reversal of 47640044 is 44004674.

It is a junction number, because it is equal to n+sod(n) for n = 47639989 and 47640016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138317 + ... + 138660.

It is an arithmetic number, because the mean of its divisors is an integer number (7109102).

Almost surely, 2^47640044 is an apocalyptic number.

It is an amenable number.

47640044 is a deficient number, since it is larger than the sum of its proper divisors (37669180).

47640044 is a wasteful number, since it uses less digits than its factorization.

47640044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277024 (or 277022 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 47640044 is about 6902.1767580960. The cubic root of 47640044 is about 362.5133889625.

The spelling of 47640044 in words is "forty-seven million, six hundred forty thousand, forty-four".