849990918 has 32 divisors (see below), whose sum is σ = 1950600960. Its totient is φ = 241884000.

The previous prime is 849990907. The next prime is 849990919. The reversal of 849990918 is 819099948.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849990919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29773 + ... + 50856.

It is an arithmetic number, because the mean of its divisors is an integer number (60956280).

Almost surely, 2^849990918 is an apocalyptic number.

849990918 is an abundant number, since it is smaller than the sum of its proper divisors (1100610042).

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

849990918 is a wasteful number, since it uses less digits than its factorization.

849990918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80892.

The product of its (nonzero) digits is 1679616, while the sum is 57.

The square root of 849990918 is about 29154.6037187954. The cubic root of 849990918 is about 947.2648634131.

The spelling of 849990918 in words is "eight hundred forty-nine million, nine hundred ninety thousand, nine hundred eighteen".