47975409 has 10 divisors (see below), whose sum is σ = 71667090. Its totient is φ = 31983552.

The previous prime is 47975359. The next prime is 47975413. The reversal of 47975409 is 90457974.

It can be written as a sum of positive squares in only one way, i.e., 30835809 + 17139600 = 5553^2 + 4140^2 .

It is not a de Polignac number, because 47975409 - 2⁸ = 47975153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47975429) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 296064 + ... + 296225.

It is an arithmetic number, because the mean of its divisors is an integer number (7166709).

Almost surely, 2^47975409 is an apocalyptic number.

It is an amenable number.

47975409 is a deficient number, since it is larger than the sum of its proper divisors (23691681).

47975409 is an equidigital number, since it uses as much as digits as its factorization.

47975409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592301 (or 592292 counting only the distinct ones).

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

The square root of 47975409 is about 6926.4283003580. The cubic root of 47975409 is about 363.3620457254.

It can be divided in two parts, 47975 and 409, that added together give a palindrome (48384).

The spelling of 47975409 in words is "forty-seven million, nine hundred seventy-five thousand, four hundred nine".