913989719 has 2 divisors, whose sum is σ = 913989720. Its totient is φ = 913989718.

The previous prime is 913989689. The next prime is 913989757. The reversal of 913989719 is 917989319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 913989719 - 2²⁸ = 645554263 is a prime.

It is a super-2 number, since 2×913989719² = 1670754412875397922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913989619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456994859 + 456994860.

It is an arithmetic number, because the mean of its divisors is an integer number (456994860).

Almost surely, 2^913989719 is an apocalyptic number.

913989719 is a deficient number, since it is larger than the sum of its proper divisors (1).

913989719 is an equidigital number, since it uses as much as digits as its factorization.

913989719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 56.

The square root of 913989719 is about 30232.2628825564. The cubic root of 913989719 is about 970.4662508570.

The spelling of 913989719 in words is "nine hundred thirteen million, nine hundred eighty-nine thousand, seven hundred nineteen".