616969439 has 2 divisors, whose sum is σ = 616969440. Its totient is φ = 616969438.

The previous prime is 616969427. The next prime is 616969447. The reversal of 616969439 is 934969616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616969439 - 2²⁴ = 600192223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616969459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308484719 + 308484720.

It is an arithmetic number, because the mean of its divisors is an integer number (308484720).

Almost surely, 2^616969439 is an apocalyptic number.

616969439 is a deficient number, since it is larger than the sum of its proper divisors (1).

616969439 is an equidigital number, since it uses as much as digits as its factorization.

616969439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 53.

The square root of 616969439 is about 24838.8695193642. The cubic root of 616969439 is about 851.3102923837.

The spelling of 616969439 in words is "six hundred sixteen million, nine hundred sixty-nine thousand, four hundred thirty-nine".