47990475 has 60 divisors (see below), whose sum is σ = 95785536. Its totient is φ = 23613120.

The previous prime is 47990471. The next prime is 47990497. The reversal of 47990475 is 57409974.

It is not a de Polignac number, because 47990475 - 2² = 47990471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 47990475.

It is not an unprimeable number, because it can be changed into a prime (47990471) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 25414 + ... + 27236.

Almost surely, 2^47990475 is an apocalyptic number.

47990475 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47990475 is a deficient number, since it is larger than the sum of its proper divisors (47795061).

47990475 is a wasteful number, since it uses less digits than its factorization.

47990475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 47990475 is about 6927.5157885060. The cubic root of 47990475 is about 363.4000779850.

The spelling of 47990475 in words is "forty-seven million, nine hundred ninety thousand, four hundred seventy-five".