464515991 has 2 divisors, whose sum is σ = 464515992. Its totient is φ = 464515990.

The previous prime is 464515969. The next prime is 464515999. The reversal of 464515991 is 199515464.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-464515991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (464515999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232257995 + 232257996.

It is an arithmetic number, because the mean of its divisors is an integer number (232257996).

Almost surely, 2^464515991 is an apocalyptic number.

464515991 is a deficient number, since it is larger than the sum of its proper divisors (1).

464515991 is an equidigital number, since it uses as much as digits as its factorization.

464515991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 44.

The square root of 464515991 is about 21552.6330409999. The cubic root of 464515991 is about 774.4621955949.

The spelling of 464515991 in words is "four hundred sixty-four million, five hundred fifteen thousand, nine hundred ninety-one".