1239979104 has 360 divisors, whose sum is σ = 4574531808. Its totient is φ = 326592000.

The previous prime is 1239979079. The next prime is 1239979127. The reversal of 1239979104 is 4019799321.

It is a self number, because there is not a number n which added to its sum of digits gives 1239979104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1650729 + ... + 1651479.

Almost surely, 2^1239979104 is an apocalyptic number.

1239979104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1239979104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2287265904).

1239979104 is an abundant number, since it is smaller than the sum of its proper divisors (3334552704).

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

1239979104 is a wasteful number, since it uses less digits than its factorization.

1239979104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 776 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 1239979104 is about 35213.3370188058. The cubic root of 1239979104 is about 1074.3310361843.

The spelling of 1239979104 in words is "one billion, two hundred thirty-nine million, nine hundred seventy-nine thousand, one hundred four".