47304391 has 2 divisors, whose sum is σ = 47304392. Its totient is φ = 47304390.

The previous prime is 47304377. The next prime is 47304401. The reversal of 47304391 is 19340374.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47304391 - 2⁷ = 47304263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47304311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23652195 + 23652196.

It is an arithmetic number, because the mean of its divisors is an integer number (23652196).

Almost surely, 2^47304391 is an apocalyptic number.

47304391 is a deficient number, since it is larger than the sum of its proper divisors (1).

47304391 is an equidigital number, since it uses as much as digits as its factorization.

47304391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 47304391 is about 6877.8187676036. The cubic root of 47304391 is about 361.6600060595.

The spelling of 47304391 in words is "forty-seven million, three hundred four thousand, three hundred ninety-one".