47194891 has 2 divisors, whose sum is σ = 47194892. Its totient is φ = 47194890.

The previous prime is 47194877. The next prime is 47194897. The reversal of 47194891 is 19849174.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47194891 - 2⁵ = 47194859 is a prime.

It is not a weakly prime, because it can be changed into another prime (47194897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23597445 + 23597446.

It is an arithmetic number, because the mean of its divisors is an integer number (23597446).

Almost surely, 2^47194891 is an apocalyptic number.

47194891 is a deficient number, since it is larger than the sum of its proper divisors (1).

47194891 is an equidigital number, since it uses as much as digits as its factorization.

47194891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 43.

The square root of 47194891 is about 6869.8537830146. The cubic root of 47194891 is about 361.3807341226.

The spelling of 47194891 in words is "forty-seven million, one hundred ninety-four thousand, eight hundred ninety-one".