47809892 has 12 divisors (see below), whose sum is σ = 90103356. Its totient is φ = 22066080.

The previous prime is 47809877. The next prime is 47809897. The reversal of 47809892 is 29890874.

It can be written as a sum of positive squares in 2 ways, for example, as 29008996 + 18800896 = 5386^2 + 4336^2 .

It is not an unprimeable number, because it can be changed into a prime (47809897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459659 + ... + 459762.

It is an arithmetic number, because the mean of its divisors is an integer number (7508613).

Almost surely, 2^47809892 is an apocalyptic number.

It is an amenable number.

47809892 is a deficient number, since it is larger than the sum of its proper divisors (42293464).

47809892 is a wasteful number, since it uses less digits than its factorization.

47809892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919438 (or 919436 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 47809892 is about 6914.4697555199. The cubic root of 47809892 is about 362.9436932500.

The spelling of 47809892 in words is "forty-seven million, eight hundred nine thousand, eight hundred ninety-two".