47807289 has 6 divisors (see below), whose sum is σ = 69054986. Its totient is φ = 31871520.

The previous prime is 47807273. The next prime is 47807297. The reversal of 47807289 is 98270874.

It can be written as a sum of positive squares in only one way, i.e., 31136400 + 16670889 = 5580^2 + 4083^2 .

It is not a de Polignac number, because 47807289 - 2⁴ = 47807273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47807489) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2655952 + ... + 2655969.

Almost surely, 2^47807289 is an apocalyptic number.

It is an amenable number.

47807289 is a deficient number, since it is larger than the sum of its proper divisors (21247697).

47807289 is a wasteful number, since it uses less digits than its factorization.

47807289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5311927 (or 5311924 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 47807289 is about 6914.2815244970. The cubic root of 47807289 is about 362.9371063315.

The spelling of 47807289 in words is "forty-seven million, eight hundred seven thousand, two hundred eighty-nine".