900090459 has 6 divisors (see below), whose sum is σ = 1300130676. Its totient is φ = 600060300.

The previous prime is 900090437. The next prime is 900090461. The reversal of 900090459 is 954090009.

It is not a de Polignac number, because 900090459 - 2⁵ = 900090427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (900090419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50005017 + ... + 50005034.

It is an arithmetic number, because the mean of its divisors is an integer number (216688446).

Almost surely, 2^900090459 is an apocalyptic number.

900090459 is a deficient number, since it is larger than the sum of its proper divisors (400040217).

900090459 is a wasteful number, since it uses less digits than its factorization.

900090459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100010057 (or 100010054 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 900090459 is about 30001.5076121184. The cubic root of 900090459 is about 965.5217306346.

The spelling of 900090459 in words is "nine hundred million, ninety thousand, four hundred fifty-nine".