47434391 has 2 divisors, whose sum is σ = 47434392. Its totient is φ = 47434390.

The previous prime is 47434379. The next prime is 47434399. The reversal of 47434391 is 19343474.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47434391 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47434399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23717195 + 23717196.

It is an arithmetic number, because the mean of its divisors is an integer number (23717196).

Almost surely, 2^47434391 is an apocalyptic number.

47434391 is a deficient number, since it is larger than the sum of its proper divisors (1).

47434391 is an equidigital number, since it uses as much as digits as its factorization.

47434391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 47434391 is about 6887.2629541785. The cubic root of 47434391 is about 361.9910027983.

The spelling of 47434391 in words is "forty-seven million, four hundred thirty-four thousand, three hundred ninety-one".