47290891 has 2 divisors, whose sum is σ = 47290892. Its totient is φ = 47290890.

The previous prime is 47290879. The next prime is 47290907. The reversal of 47290891 is 19809274.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47290891 is a prime.

It is not a weakly prime, because it can be changed into another prime (47290861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23645445 + 23645446.

It is an arithmetic number, because the mean of its divisors is an integer number (23645446).

Almost surely, 2^47290891 is an apocalyptic number.

47290891 is a deficient number, since it is larger than the sum of its proper divisors (1).

47290891 is an equidigital number, since it uses as much as digits as its factorization.

47290891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 47290891 is about 6876.8372817742. The cubic root of 47290891 is about 361.6255985798.

The spelling of 47290891 in words is "forty-seven million, two hundred ninety thousand, eight hundred ninety-one".