900039131 has 2 divisors, whose sum is σ = 900039132. Its totient is φ = 900039130.

The previous prime is 900039103. The next prime is 900039169. The reversal of 900039131 is 131930009.

It is a weak prime.

It is an emirp because it is prime and its reverse (131930009) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-900039131 is a prime.

It is a super-2 number, since 2×900039131² = 1620140874662470322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 900039131.

It is not a weakly prime, because it can be changed into another prime (900039181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450019565 + 450019566.

It is an arithmetic number, because the mean of its divisors is an integer number (450019566).

Almost surely, 2^900039131 is an apocalyptic number.

900039131 is a deficient number, since it is larger than the sum of its proper divisors (1).

900039131 is an equidigital number, since it uses as much as digits as its factorization.

900039131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 900039131 is about 30000.6521762444. The cubic root of 900039131 is about 965.5033772047.

The spelling of 900039131 in words is "nine hundred million, thirty-nine thousand, one hundred thirty-one".