900139097 has 16 divisors (see below), whose sum is σ = 1061934720. Its totient is φ = 752198400.

The previous prime is 900139073. The next prime is 900139099. The reversal of 900139097 is 790931009.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-900139097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 900139097.

It is not an unprimeable number, because it can be changed into a prime (900139099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21404 + ... + 47522.

It is an arithmetic number, because the mean of its divisors is an integer number (66370920).

Almost surely, 2^900139097 is an apocalyptic number.

It is an amenable number.

900139097 is a deficient number, since it is larger than the sum of its proper divisors (161795623).

900139097 is a wasteful number, since it uses less digits than its factorization.

900139097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26384.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 900139097 is about 30002.3181937663. The cubic root of 900139097 is about 965.5391215534.

The spelling of 900139097 in words is "nine hundred million, one hundred thirty-nine thousand, ninety-seven".