890066844 has 18 divisors (see below), whose sum is σ = 2249891280. Its totient is φ = 296688936.

The previous prime is 890066791. The next prime is 890066867. The reversal of 890066844 is 448660098.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 890066844.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12362004 + ... + 12362075.

It is an arithmetic number, because the mean of its divisors is an integer number (124993960).

Almost surely, 2^890066844 is an apocalyptic number.

It is an amenable number.

890066844 is an abundant number, since it is smaller than the sum of its proper divisors (1359824436).

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

890066844 is a wasteful number, since it uses less digits than its factorization.

890066844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24724089 (or 24724084 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 890066844 is about 29833.9880673034. The cubic root of 890066844 is about 961.9242523738.

The spelling of 890066844 in words is "eight hundred ninety million, sixty-six thousand, eight hundred forty-four".