699408769 has 4 divisors (see below), whose sum is σ = 699901696. Its totient is φ = 698915844.

The previous prime is 699408761. The next prime is 699408799. The reversal of 699408769 is 967804996.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 699408769 - 2³ = 699408761 is a prime.

It is a super-2 number, since 2×699408769² = 978345252308190722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (699408761) 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, 244329 + ... + 247174.

It is an arithmetic number, because the mean of its divisors is an integer number (174975424).

Almost surely, 2^699408769 is an apocalyptic number.

It is an amenable number.

699408769 is a deficient number, since it is larger than the sum of its proper divisors (492927).

699408769 is a wasteful number, since it uses less digits than its factorization.

699408769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492926.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The square root of 699408769 is about 26446.3375347136. The cubic root of 699408769 is about 887.6539521065.

The spelling of 699408769 in words is "six hundred ninety-nine million, four hundred eight thousand, seven hundred sixty-nine".