1139958798 has 32 divisors (see below), whose sum is σ = 2595324672. Its totient is φ = 330422400.

The previous prime is 1139958797. The next prime is 1139958823. The reversal of 1139958798 is 8978599311.

It is a super-2 number, since 2×1139958798² = 2599012122275209608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139958797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373963 + ... + 376998.

It is an arithmetic number, because the mean of its divisors is an integer number (81103896).

Almost surely, 2^1139958798 is an apocalyptic number.

1139958798 is an abundant number, since it is smaller than the sum of its proper divisors (1455365874).

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

1139958798 is a wasteful number, since it uses less digits than its factorization.

1139958798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751000.

The product of its digits is 4898880, while the sum is 60.

The square root of 1139958798 is about 33763.2758777936. The cubic root of 1139958798 is about 1044.6313414604.

The spelling of 1139958798 in words is "one billion, one hundred thirty-nine million, nine hundred fifty-eight thousand, seven hundred ninety-eight".