699428159 has 4 divisors (see below), whose sum is σ = 708281760. Its totient is φ = 690574560.

The previous prime is 699428141. The next prime is 699428173. The reversal of 699428159 is 951824996.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-699428159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 699428159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699428189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4426682 + ... + 4426839.

It is an arithmetic number, because the mean of its divisors is an integer number (177070440).

Almost surely, 2^699428159 is an apocalyptic number.

699428159 is a deficient number, since it is larger than the sum of its proper divisors (8853601).

699428159 is an equidigital number, since it uses as much as digits as its factorization.

699428159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8853600.

The product of its digits is 1399680, while the sum is 53.

The square root of 699428159 is about 26446.7041235765. The cubic root of 699428159 is about 887.6621549639.

It can be divided in two parts, 6994 and 28159, that added together give a palindrome (35153).

The spelling of 699428159 in words is "six hundred ninety-nine million, four hundred twenty-eight thousand, one hundred fifty-nine".