699494399 has 4 divisors (see below), whose sum is σ = 716555280. Its totient is φ = 682433520.

The previous prime is 699494347. The next prime is 699494431. The reversal of 699494399 is 993494996.

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

It is not a de Polignac number, because 699494399 - 2¹² = 699490303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699494309) 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, 8530379 + ... + 8530460.

It is an arithmetic number, because the mean of its divisors is an integer number (179138820).

Almost surely, 2^699494399 is an apocalyptic number.

699494399 is a deficient number, since it is larger than the sum of its proper divisors (17060881).

699494399 is a wasteful number, since it uses less digits than its factorization.

699494399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17060880.

The product of its digits is 17006112, while the sum is 62.

The square root of 699494399 is about 26447.9564238903. The cubic root of 699494399 is about 887.6901763717.

The spelling of 699494399 in words is "six hundred ninety-nine million, four hundred ninety-four thousand, three hundred ninety-nine".