1239996790 has 16 divisors (see below), whose sum is σ = 2308960080. Its totient is φ = 478895200.

The previous prime is 1239996773. The next prime is 1239996809. The reversal of 1239996790 is 976999321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137636 + ... + 2138215.

It is an arithmetic number, because the mean of its divisors is an integer number (144310005).

Almost surely, 2^1239996790 is an apocalyptic number.

1239996790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1239996790 is a deficient number, since it is larger than the sum of its proper divisors (1068963290).

1239996790 is a wasteful number, since it uses less digits than its factorization.

1239996790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275887.

The product of its (nonzero) digits is 1653372, while the sum is 55.

The square root of 1239996790 is about 35213.5881443513. The cubic root of 1239996790 is about 1074.3361439392.

The spelling of 1239996790 in words is "one billion, two hundred thirty-nine million, nine hundred ninety-six thousand, seven hundred ninety".