1139663975 has 12 divisors (see below), whose sum is σ = 1423975080. Its totient is φ = 904768800.

The previous prime is 1139663971. The next prime is 1139663977. The reversal of 1139663975 is 5793669311.

It is not a de Polignac number, because 1139663975 - 2² = 1139663971 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139663971) 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, 170720 + ... + 177269.

It is an arithmetic number, because the mean of its divisors is an integer number (118664590).

Almost surely, 2^1139663975 is an apocalyptic number.

1139663975 is a deficient number, since it is larger than the sum of its proper divisors (284311105).

1139663975 is a wasteful number, since it uses less digits than its factorization.

1139663975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348130 (or 348125 counting only the distinct ones).

The product of its digits is 918540, while the sum is 50.

The square root of 1139663975 is about 33758.9095647356. The cubic root of 1139663975 is about 1044.5412774157.

The spelling of 1139663975 in words is "one billion, one hundred thirty-nine million, six hundred sixty-three thousand, nine hundred seventy-five".