47390657 has 2 divisors, whose sum is σ = 47390658. Its totient is φ = 47390656.

The previous prime is 47390647. The next prime is 47390663. The reversal of 47390657 is 75609374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38142976 + 9247681 = 6176^2 + 3041^2 .

It is a cyclic number.

It is not a de Polignac number, because 47390657 - 2¹⁰ = 47389633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47390627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23695328 + 23695329.

It is an arithmetic number, because the mean of its divisors is an integer number (23695329).

Almost surely, 2^47390657 is an apocalyptic number.

It is an amenable number.

47390657 is a deficient number, since it is larger than the sum of its proper divisors (1).

47390657 is an equidigital number, since it uses as much as digits as its factorization.

47390657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 47390657 is about 6884.0872307082. The cubic root of 47390657 is about 361.8797179821.

The spelling of 47390657 in words is "forty-seven million, three hundred ninety thousand, six hundred fifty-seven".