1173023899 has 12 divisors (see below), whose sum is σ = 1222494840. Its totient is φ = 1124879840.

The previous prime is 1173023893. The next prime is 1173023909. The reversal of 1173023899 is 9983203711.

It is not a de Polignac number, because 1173023899 - 2²⁵ = 1139469467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1173023893) 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, 138612 + ... + 146830.

It is an arithmetic number, because the mean of its divisors is an integer number (101874570).

Almost surely, 2^1173023899 is an apocalyptic number.

1173023899 is a deficient number, since it is larger than the sum of its proper divisors (49470941).

1173023899 is an frugal number, since it uses more digits than its factorization.

1173023899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8378 (or 8319 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 1173023899 is about 34249.4364771159. The cubic root of 1173023899 is about 1054.6352591631.

The spelling of 1173023899 in words is "one billion, one hundred seventy-three million, twenty-three thousand, eight hundred ninety-nine".