1139434571 has 16 divisors (see below), whose sum is σ = 1323783648. Its totient is φ = 969254400.

The previous prime is 1139434561. The next prime is 1139434577. The reversal of 1139434571 is 1754349311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1139434571 - 2⁶ = 1139434507 is a prime.

It is a super-2 number, since 2×1139434571² = 2596622283179908082, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 14741 + ... + 49961.

It is an arithmetic number, because the mean of its divisors is an integer number (82736478).

Almost surely, 2^1139434571 is an apocalyptic number.

1139434571 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1139434571 is a deficient number, since it is larger than the sum of its proper divisors (184349077).

1139434571 is a wasteful number, since it uses less digits than its factorization.

1139434571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35422.

The product of its digits is 45360, while the sum is 38.

The square root of 1139434571 is about 33755.5117129040. The cubic root of 1139434571 is about 1044.4711871575.

The spelling of 1139434571 in words is "one billion, one hundred thirty-nine million, four hundred thirty-four thousand, five hundred seventy-one".