693199939 has 4 divisors (see below), whose sum is σ = 733976424. Its totient is φ = 652423456.

The previous prime is 693199937. The next prime is 693199951. The reversal of 693199939 is 939991396.

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

It is a cyclic number.

It is not a de Polignac number, because 693199939 - 2¹ = 693199937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (693199937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20388217 + ... + 20388250.

It is an arithmetic number, because the mean of its divisors is an integer number (183494106).

Almost surely, 2^693199939 is an apocalyptic number.

693199939 is a deficient number, since it is larger than the sum of its proper divisors (40776485).

693199939 is a wasteful number, since it uses less digits than its factorization.

693199939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40776484.

The product of its digits is 3188646, while the sum is 58.

The square root of 693199939 is about 26328.6904155904. The cubic root of 693199939 is about 885.0194975861.

The spelling of 693199939 in words is "six hundred ninety-three million, one hundred ninety-nine thousand, nine hundred thirty-nine".