47640885 has 32 divisors (see below), whose sum is σ = 84965760. Its totient is φ = 22652928.

The previous prime is 47640877. The next prime is 47640949. The reversal of 47640885 is 58804674.

It is not a de Polignac number, because 47640885 - 2³ = 47640877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72 + ... + 9761.

It is an arithmetic number, because the mean of its divisors is an integer number (2655180).

Almost surely, 2^47640885 is an apocalyptic number.

It is an amenable number.

47640885 is a deficient number, since it is larger than the sum of its proper divisors (37324875).

47640885 is a wasteful number, since it uses less digits than its factorization.

47640885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9877.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 47640885 is about 6902.2376806366. The cubic root of 47640885 is about 362.5155221257.

The spelling of 47640885 in words is "forty-seven million, six hundred forty thousand, eight hundred eighty-five".