699138834 has 16 divisors (see below), whose sum is σ = 1399577088. Its totient is φ = 232829712.

The previous prime is 699138829. The next prime is 699138841. The reversal of 699138834 is 438831996.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47077 + ... + 60120.

It is an arithmetic number, because the mean of its divisors is an integer number (87473568).

Almost surely, 2^699138834 is an apocalyptic number.

699138834 is an abundant number, since it is smaller than the sum of its proper divisors (700438254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

699138834 is a wasteful number, since it uses less digits than its factorization.

699138834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108289.

The product of its digits is 1119744, while the sum is 51.

The square root of 699138834 is about 26441.2335945205. The cubic root of 699138834 is about 887.5397414988.

The spelling of 699138834 in words is "six hundred ninety-nine million, one hundred thirty-eight thousand, eight hundred thirty-four".