693997839 has 6 divisors (see below), whose sum is σ = 1002441336. Its totient is φ = 462665220.

The previous prime is 693997831. The next prime is 693997861. The reversal of 693997839 is 938799396.

693997839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 693997839 - 2³ = 693997831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693997831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38555427 + ... + 38555444.

It is an arithmetic number, because the mean of its divisors is an integer number (167073556).

Almost surely, 2^693997839 is an apocalyptic number.

693997839 is a deficient number, since it is larger than the sum of its proper divisors (308443497).

693997839 is a wasteful number, since it uses less digits than its factorization.

693997839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77110877 (or 77110874 counting only the distinct ones).

The product of its digits is 19840464, while the sum is 63.

The square root of 693997839 is about 26343.8387293879. The cubic root of 693997839 is about 885.3589313014.

The spelling of 693997839 in words is "six hundred ninety-three million, nine hundred ninety-seven thousand, eight hundred thirty-nine".