1139434572 has 24 divisors (see below), whose sum is σ = 2663136000. Its totient is φ = 379175056.

The previous prime is 1139434561. The next prime is 1139434577. The reversal of 1139434572 is 2754349311.

It is a super-2 number, since 2×1139434572² = 2596622287737646368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1139434572.

It is not an unprimeable number, because it can be changed into a prime (1139434577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72072 + ... + 86447.

It is an arithmetic number, because the mean of its divisors is an integer number (110964000).

Almost surely, 2^1139434572 is an apocalyptic number.

1139434572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1139434572 is an abundant number, since it is smaller than the sum of its proper divisors (1523701428).

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

1139434572 is a wasteful number, since it uses less digits than its factorization.

1139434572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159125 (or 159123 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 1139434572 is about 33755.5117277164. The cubic root of 1139434572 is about 1044.4711874631.

It can be divided in two parts, 1139 and 434572, that added together give a triangular number (435711 = T₉₃₃).

The spelling of 1139434572 in words is "one billion, one hundred thirty-nine million, four hundred thirty-four thousand, five hundred seventy-two".