47909970 has 24 divisors (see below), whose sum is σ = 124566156. Its totient is φ = 12775968.

The previous prime is 47909929. The next prime is 47909977. The reversal of 47909970 is 7990974.

It can be written as a sum of positive squares in 2 ways, for example, as 46253601 + 1656369 = 6801^2 + 1287^2 .

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

It is not an unprimeable number, because it can be changed into a prime (47909977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266077 + ... + 266256.

Almost surely, 2^47909970 is an apocalyptic number.

47909970 is an abundant number, since it is smaller than the sum of its proper divisors (76656186).

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

47909970 is a wasteful number, since it uses less digits than its factorization.

47909970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532346 (or 532343 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 47909970 is about 6921.7028251724. The cubic root of 47909970 is about 363.1967605736.

The spelling of 47909970 in words is "forty-seven million, nine hundred nine thousand, nine hundred seventy".