769899005 has 4 divisors (see below), whose sum is σ = 923878812. Its totient is φ = 615919200.

The previous prime is 769898999. The next prime is 769899007. The reversal of 769899005 is 500998967.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 320374201 + 449524804 = 17899^2 + 21202^2 .

It is not a de Polignac number, because 769899005 - 2⁸ = 769898749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769899007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76989896 + ... + 76989905.

It is an arithmetic number, because the mean of its divisors is an integer number (230969703).

Almost surely, 2^769899005 is an apocalyptic number.

It is an amenable number.

769899005 is a deficient number, since it is larger than the sum of its proper divisors (153979807).

769899005 is a wasteful number, since it uses less digits than its factorization.

769899005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153979806.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 769899005 is about 27747.0539877660. The cubic root of 769899005 is about 916.5255707166.

The spelling of 769899005 in words is "seven hundred sixty-nine million, eight hundred ninety-nine thousand, five".