1139538433 has 12 divisors (see below), whose sum is σ = 1318476880. Its totient is φ = 981418680.

The previous prime is 1139538409. The next prime is 1139538437. The reversal of 1139538433 is 3348359311.

It is not a de Polignac number, because 1139538433 - 2¹³ = 1139530241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1139538437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245535 + ... + 250132.

Almost surely, 2^1139538433 is an apocalyptic number.

It is an amenable number.

1139538433 is a deficient number, since it is larger than the sum of its proper divisors (178938447).

1139538433 is a wasteful number, since it uses less digits than its factorization.

1139538433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495708 (or 495697 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 1139538433 is about 33757.0501229003. The cubic root of 1139538433 is about 1044.5029214853.

The spelling of 1139538433 in words is "one billion, one hundred thirty-nine million, five hundred thirty-eight thousand, four hundred thirty-three".