699729994 has 4 divisors (see below), whose sum is σ = 1049594994. Its totient is φ = 349864996.

The previous prime is 699729991. The next prime is 699730021. The reversal of 699729994 is 499927996.

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

It can be written as a sum of positive squares in only one way, i.e., 450500625 + 249229369 = 21225^2 + 15787^2 .

It is not an unprimeable number, because it can be changed into a prime (699729991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174932497 + ... + 174932500.

Almost surely, 2^699729994 is an apocalyptic number.

699729994 is a deficient number, since it is larger than the sum of its proper divisors (349865000).

699729994 is a wasteful number, since it uses less digits than its factorization.

699729994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349864999.

The product of its digits is 19840464, while the sum is 64.

The square root of 699729994 is about 26452.4099847254. The cubic root of 699729994 is about 887.7898254384.

The spelling of 699729994 in words is "six hundred ninety-nine million, seven hundred twenty-nine thousand, nine hundred ninety-four".