47807489 has 2 divisors, whose sum is σ = 47807490. Its totient is φ = 47807488.

The previous prime is 47807453. The next prime is 47807531. The reversal of 47807489 is 98470874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47720464 + 87025 = 6908^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 47807489 - 2²⁰ = 46758913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47807449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23903744 + 23903745.

It is an arithmetic number, because the mean of its divisors is an integer number (23903745).

Almost surely, 2^47807489 is an apocalyptic number.

It is an amenable number.

47807489 is a deficient number, since it is larger than the sum of its proper divisors (1).

47807489 is an equidigital number, since it uses as much as digits as its factorization.

47807489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 47807489 is about 6914.2959873005. The cubic root of 47807489 is about 362.9376124420.

The spelling of 47807489 in words is "forty-seven million, eight hundred seven thousand, four hundred eighty-nine".