899345423 has 4 divisors (see below), whose sum is σ = 918480480. Its totient is φ = 880210368.

The previous prime is 899345413. The next prime is 899345431. The reversal of 899345423 is 324543998.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 899345423 - 2¹⁰ = 899344399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 19135009 = 899345423 / (8 + 9 + 9 + 3 + 4 + 5 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899345413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9567458 + ... + 9567551.

It is an arithmetic number, because the mean of its divisors is an integer number (229620120).

Almost surely, 2^899345423 is an apocalyptic number.

899345423 is a deficient number, since it is larger than the sum of its proper divisors (19135057).

899345423 is a wasteful number, since it uses less digits than its factorization.

899345423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19135056.

The product of its digits is 933120, while the sum is 47.

The square root of 899345423 is about 29989.0883989494. The cubic root of 899345423 is about 965.2552585230.

The spelling of 899345423 in words is "eight hundred ninety-nine million, three hundred forty-five thousand, four hundred twenty-three".