900438 has 32 divisors (see below), whose sum is σ = 2246400. Its totient is φ = 233760.

The previous prime is 900409. The next prime is 900443. The reversal of 900438 is 834009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513 + ... + 1436.

It is an arithmetic number, because the mean of its divisors is an integer number (70200).

2⁹⁰⁰⁴³⁸ is an apocalyptic number.

900438 is an abundant number, since it is smaller than the sum of its proper divisors (1345962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

900438 is a wasteful number, since it uses less digits than its factorization.

900438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 900438 is about 948.9141162402. The cubic root of 900438 is about 96.5645983038.

The spelling of 900438 in words is "nine hundred thousand, four hundred thirty-eight".