1139962431 has 8 divisors (see below), whose sum is σ = 1520890624. Its totient is φ = 759504600.

The previous prime is 1139962429. The next prime is 1139962459. The reversal of 1139962431 is 1342699311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1139962431 - 2¹ = 1139962429 is a prime.

It is a super-2 number, since 2×1139962431² = 2599028688182859522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1139962431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139962471) 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, 111895 + ... + 121656.

It is an arithmetic number, because the mean of its divisors is an integer number (190111328).

Almost surely, 2^1139962431 is an apocalyptic number.

1139962431 is a deficient number, since it is larger than the sum of its proper divisors (380928193).

1139962431 is a wasteful number, since it uses less digits than its factorization.

1139962431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235181.

The product of its digits is 34992, while the sum is 39.

The square root of 1139962431 is about 33763.3296788098. The cubic root of 1139962431 is about 1044.6324511911.

The spelling of 1139962431 in words is "one billion, one hundred thirty-nine million, nine hundred sixty-two thousand, four hundred thirty-one".