1239430797 has 24 divisors (see below), whose sum is σ = 2020393440. Its totient is φ = 725266080.

The previous prime is 1239430793. The next prime is 1239430867. The reversal of 1239430797 is 7970349321.

1239430797 is a `hidden beast` number, since 123 + 9 + 430 + 7 + 97 = 666.

It is not a de Polignac number, because 1239430797 - 2² = 1239430793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239430793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212983 + ... + 218724.

It is an arithmetic number, because the mean of its divisors is an integer number (84183060).

Almost surely, 2^1239430797 is an apocalyptic number.

It is an amenable number.

1239430797 is a deficient number, since it is larger than the sum of its proper divisors (780962643).

1239430797 is a wasteful number, since it uses less digits than its factorization.

1239430797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431753 (or 431750 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 1239430797 is about 35205.5506561110. The cubic root of 1239430797 is about 1074.1726598393.

The spelling of 1239430797 in words is "one billion, two hundred thirty-nine million, four hundred thirty thousand, seven hundred ninety-seven".