769635389 has 2 divisors, whose sum is σ = 769635390. Its totient is φ = 769635388.

The previous prime is 769635323. The next prime is 769635469. The reversal of 769635389 is 983536967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 755700100 + 13935289 = 27490^2 + 3733^2 .

It is a cyclic number.

It is not a de Polignac number, because 769635389 - 2⁸ = 769635133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (769635289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384817694 + 384817695.

It is an arithmetic number, because the mean of its divisors is an integer number (384817695).

Almost surely, 2^769635389 is an apocalyptic number.

It is an amenable number.

769635389 is a deficient number, since it is larger than the sum of its proper divisors (1).

769635389 is an equidigital number, since it uses as much as digits as its factorization.

769635389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 56.

The square root of 769635389 is about 27742.3032389166. The cubic root of 769635389 is about 916.4209516326.

The spelling of 769635389 in words is "seven hundred sixty-nine million, six hundred thirty-five thousand, three hundred eighty-nine".