900899919 has 12 divisors (see below), whose sum is σ = 1315922400. Its totient is φ = 593851104.

The previous prime is 900899917. The next prime is 900899927. The reversal of 900899919 is 919998009.

It is not a de Polignac number, because 900899919 - 2¹ = 900899917 is a prime.

It is a super-2 number, since 2×900899919² = 1623241328108413122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900899917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 561559 + ... + 563160.

It is an arithmetic number, because the mean of its divisors is an integer number (109660200).

Almost surely, 2^900899919 is an apocalyptic number.

900899919 is a deficient number, since it is larger than the sum of its proper divisors (415022481).

900899919 is a wasteful number, since it uses less digits than its factorization.

900899919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124814 (or 1124811 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 54.

The square root of 900899919 is about 30014.9949025483. The cubic root of 900899919 is about 965.8110782381.

The spelling of 900899919 in words is "nine hundred million, eight hundred ninety-nine thousand, nine hundred nineteen".