47121992 has 16 divisors (see below), whose sum is σ = 88819200. Its totient is φ = 23436880.

The previous prime is 47121983. The next prime is 47122001. The reversal of 47121992 is 29912174.

It is an interprime number because it is at equal distance from previous prime (47121983) and next prime (47122001).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13892 + ... + 16947.

It is an arithmetic number, because the mean of its divisors is an integer number (5551200).

Almost surely, 2^47121992 is an apocalyptic number.

It is an amenable number.

47121992 is a deficient number, since it is larger than the sum of its proper divisors (41697208).

47121992 is a wasteful number, since it uses less digits than its factorization.

47121992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31036 (or 31032 counting only the distinct ones).

The product of its digits is 9072, while the sum is 35.

The square root of 47121992 is about 6864.5460155789. The cubic root of 47121992 is about 361.1945708229.

The spelling of 47121992 in words is "forty-seven million, one hundred twenty-one thousand, nine hundred ninety-two".