699399 has 6 divisors (see below), whose sum is σ = 1010256. Its totient is φ = 466260.

The previous prime is 699383. The next prime is 699401. The reversal of 699399 is 993996.

699399 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 699399 - 2⁴ = 699383 is a prime.

It is a super-2 number, since 2×699399² = 978317922402, which contains 22 as substring.

699399 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38847 + ... + 38864.

It is an arithmetic number, because the mean of its divisors is an integer number (168376).

2⁶⁹⁹³⁹⁹ is an apocalyptic number.

699399 is a deficient number, since it is larger than the sum of its proper divisors (310857).

699399 is a wasteful number, since it uses less digits than its factorization.

699399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77717 (or 77714 counting only the distinct ones).

The product of its digits is 118098, while the sum is 45.

The square root of 699399 is about 836.3007832114. The cubic root of 699399 is about 88.7649819315.

The spelling of 699399 in words is "six hundred ninety-nine thousand, three hundred ninety-nine".