900139579169 has 2 divisors, whose sum is σ = 900139579170. Its totient is φ = 900139579168.

The previous prime is 900139579109. The next prime is 900139579201. The reversal of 900139579169 is 961975931009.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 668862265600 + 231277313569 = 817840^2 + 480913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-900139579169 is a prime.

It is a super-2 number, since 2×900139579169² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (900139579109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450069789584 + 450069789585.

It is an arithmetic number, because the mean of its divisors is an integer number (450069789585).

Almost surely, 2^900139579169 is an apocalyptic number.

It is an amenable number.

900139579169 is a deficient number, since it is larger than the sum of its proper divisors (1).

900139579169 is an equidigital number, since it uses as much as digits as its factorization.

900139579169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4133430, while the sum is 59.

The spelling of 900139579169 in words is "nine hundred billion, one hundred thirty-nine million, five hundred seventy-nine thousand, one hundred sixty-nine".