999153073 has 2 divisors, whose sum is σ = 999153074. Its totient is φ = 999153072.

The previous prime is 999153049. The next prime is 999153083. The reversal of 999153073 is 370351999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 901380529 + 97772544 = 30023^2 + 9888^2 .

It is a cyclic number.

It is not a de Polignac number, because 999153073 - 2⁵ = 999153041 is a prime.

It is not a weakly prime, because it can be changed into another prime (999153013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499576536 + 499576537.

It is an arithmetic number, because the mean of its divisors is an integer number (499576537).

Almost surely, 2^999153073 is an apocalyptic number.

It is an amenable number.

999153073 is a deficient number, since it is larger than the sum of its proper divisors (1).

999153073 is an equidigital number, since it uses as much as digits as its factorization.

999153073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 229635, while the sum is 46.

The square root of 999153073 is about 31609.3826735038. The cubic root of 999153073 is about 999.7176112641.

The spelling of 999153073 in words is "nine hundred ninety-nine million, one hundred fifty-three thousand, seventy-three".