779497087 has 2 divisors, whose sum is σ = 779497088. Its totient is φ = 779497086.

The previous prime is 779497067. The next prime is 779497217. The reversal of 779497087 is 780794977.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 779497087 - 2²³ = 771108479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (779497007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 389748543 + 389748544.

It is an arithmetic number, because the mean of its divisors is an integer number (389748544).

Almost surely, 2^779497087 is an apocalyptic number.

779497087 is a deficient number, since it is larger than the sum of its proper divisors (1).

779497087 is an equidigital number, since it uses as much as digits as its factorization.

779497087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6223392, while the sum is 58.

The square root of 779497087 is about 27919.4750487899. The cubic root of 779497087 is about 920.3185282520.

The spelling of 779497087 in words is "seven hundred seventy-nine million, four hundred ninety-seven thousand, eighty-seven".