699920438 has 16 divisors (see below), whose sum is σ = 1222503840. Its totient is φ = 294305856.

The previous prime is 699920437. The next prime is 699920477. The reversal of 699920438 is 834029996.

It is a super-2 number, since 2×699920438² = 979777239060223688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699920437) 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 7 ways as a sum of consecutive naturals, for example, 470903 + ... + 472386.

It is an arithmetic number, because the mean of its divisors is an integer number (76406490).

Almost surely, 2^699920438 is an apocalyptic number.

699920438 is a deficient number, since it is larger than the sum of its proper divisors (522583402).

699920438 is a wasteful number, since it uses less digits than its factorization.

699920438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943351.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 699920438 is about 26456.0094874492. The cubic root of 699920438 is about 887.8703607451.

The spelling of 699920438 in words is "six hundred ninety-nine million, nine hundred twenty thousand, four hundred thirty-eight".