1239493968 has 40 divisors (see below), whose sum is σ = 3557808000. Its totient is φ = 413164512.

The previous prime is 1239493967. The next prime is 1239493991. The reversal of 1239493968 is 8693949321.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1239493967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1434168 + ... + 1435031.

It is an arithmetic number, because the mean of its divisors is an integer number (88945200).

Almost surely, 2^1239493968 is an apocalyptic number.

1239493968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1239493968 is an abundant number, since it is smaller than the sum of its proper divisors (2318314032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1239493968 is a wasteful number, since it uses less digits than its factorization.

1239493968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869216 (or 2869204 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 1239493968 is about 35206.4478185460. The cubic root of 1239493968 is about 1074.1909089174.

The spelling of 1239493968 in words is "one billion, two hundred thirty-nine million, four hundred ninety-three thousand, nine hundred sixty-eight".