899218149 has 24 divisors (see below), whose sum is σ = 1268455680. Its totient is φ = 566548992.

The previous prime is 899218127. The next prime is 899218153. The reversal of 899218149 is 941812998.

It is not a de Polignac number, because 899218149 - 2¹⁵ = 899185381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899218169) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 624172 + ... + 625610.

It is an arithmetic number, because the mean of its divisors is an integer number (52852320).

Almost surely, 2^899218149 is an apocalyptic number.

It is an amenable number.

899218149 is a deficient number, since it is larger than the sum of its proper divisors (369237531).

899218149 is a wasteful number, since it uses less digits than its factorization.

899218149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057 (or 2038 counting only the distinct ones).

The product of its digits is 373248, while the sum is 51.

The square root of 899218149 is about 29986.9663187192. The cubic root of 899218149 is about 965.2097225548.

The spelling of 899218149 in words is "eight hundred ninety-nine million, two hundred eighteen thousand, one hundred forty-nine".