900143438 has 16 divisors (see below), whose sum is σ = 1464511104. Its totient is φ = 413264640.

The previous prime is 900143417. The next prime is 900143443. The reversal of 900143438 is 834341009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321470 + ... + 324257.

It is an arithmetic number, because the mean of its divisors is an integer number (91531944).

Almost surely, 2^900143438 is an apocalyptic number.

900143438 is a deficient number, since it is larger than the sum of its proper divisors (564367666).

900143438 is a wasteful number, since it uses less digits than its factorization.

900143438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645787.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 900143438 is about 30002.3905380888. The cubic root of 900143438 is about 965.5406736833.

The spelling of 900143438 in words is "nine hundred million, one hundred forty-three thousand, four hundred thirty-eight".