1132639999 has 4 divisors (see below), whose sum is σ = 1134402136. Its totient is φ = 1130877864.

The previous prime is 1132639961. The next prime is 1132640023. The reversal of 1132639999 is 9999362311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9999362311 = 17 ⋅588197783.

It is a cyclic number.

It is not a de Polignac number, because 1132639999 - 2¹¹ = 1132637951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1132639939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880104 + ... + 881389.

It is an arithmetic number, because the mean of its divisors is an integer number (283600534).

Almost surely, 2^1132639999 is an apocalyptic number.

1132639999 is a deficient number, since it is larger than the sum of its proper divisors (1762137).

1132639999 is an equidigital number, since it uses as much as digits as its factorization.

1132639999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762136.

The product of its digits is 708588, while the sum is 52.

The square root of 1132639999 is about 33654.7173365043. The cubic root of 1132639999 is about 1042.3909484198.

The spelling of 1132639999 in words is "one billion, one hundred thirty-two million, six hundred thirty-nine thousand, nine hundred ninety-nine".