47902691 has 2 divisors, whose sum is σ = 47902692. Its totient is φ = 47902690.

The previous prime is 47902681. The next prime is 47902709. The reversal of 47902691 is 19620974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47902691 - 2¹⁸ = 47640547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (47902681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23951345 + 23951346.

It is an arithmetic number, because the mean of its divisors is an integer number (23951346).

Almost surely, 2^47902691 is an apocalyptic number.

47902691 is a deficient number, since it is larger than the sum of its proper divisors (1).

47902691 is an equidigital number, since it uses as much as digits as its factorization.

47902691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 47902691 is about 6921.1769952805. The cubic root of 47902691 is about 363.1783660507.

The spelling of 47902691 in words is "forty-seven million, nine hundred two thousand, six hundred ninety-one".