1139995958 has 4 divisors (see below), whose sum is σ = 1709993940. Its totient is φ = 569997978.

The previous prime is 1139995949. The next prime is 1139995973. The reversal of 1139995958 is 8595999311.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1139995897 and 1139995906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284998988 + ... + 284998991.

It is an arithmetic number, because the mean of its divisors is an integer number (427498485).

Almost surely, 2^1139995958 is an apocalyptic number.

1139995958 is a deficient number, since it is larger than the sum of its proper divisors (569997982).

1139995958 is an equidigital number, since it uses as much as digits as its factorization.

1139995958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569997981.

The product of its digits is 3936600, while the sum is 59.

The square root of 1139995958 is about 33763.8261753611. The cubic root of 1139995958 is about 1044.6426921861.

The spelling of 1139995958 in words is "one billion, one hundred thirty-nine million, nine hundred ninety-five thousand, nine hundred fifty-eight".