473149991 has 2 divisors, whose sum is σ = 473149992. Its totient is φ = 473149990.

The previous prime is 473149903. The next prime is 473150009. The reversal of 473149991 is 199941374.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-473149991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (473142991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236574995 + 236574996.

It is an arithmetic number, because the mean of its divisors is an integer number (236574996).

Almost surely, 2^473149991 is an apocalyptic number.

473149991 is a deficient number, since it is larger than the sum of its proper divisors (1).

473149991 is an equidigital number, since it uses as much as digits as its factorization.

473149991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 47.

The square root of 473149991 is about 21752.0111943701. The cubic root of 473149991 is about 779.2311023659.

The spelling of 473149991 in words is "four hundred seventy-three million, one hundred forty-nine thousand, nine hundred ninety-one".