47910091 has 2 divisors, whose sum is σ = 47910092. Its totient is φ = 47910090.

The previous prime is 47910073. The next prime is 47910167. The reversal of 47910091 is 19001974.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47910091 - 2¹¹ = 47908043 is a prime.

It is not a weakly prime, because it can be changed into another prime (47910011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23955045 + 23955046.

It is an arithmetic number, because the mean of its divisors is an integer number (23955046).

Almost surely, 2^47910091 is an apocalyptic number.

47910091 is a deficient number, since it is larger than the sum of its proper divisors (1).

47910091 is an equidigital number, since it uses as much as digits as its factorization.

47910091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 47910091 is about 6921.7115657906. The cubic root of 47910091 is about 363.1970663330.

The spelling of 47910091 in words is "forty-seven million, nine hundred ten thousand, ninety-one".