890644092 has 96 divisors (see below), whose sum is σ = 2285946432. Its totient is φ = 268240896.

The previous prime is 890644091. The next prime is 890644099. The reversal of 890644092 is 290446098.

890644092 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×890644092² = 1586493797229008928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890644091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2243238 + ... + 2243634.

It is an arithmetic number, because the mean of its divisors is an integer number (23811942).

Almost surely, 2^890644092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 890644092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1142973216).

890644092 is an abundant number, since it is smaller than the sum of its proper divisors (1395302340).

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

890644092 is a wasteful number, since it uses less digits than its factorization.

890644092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 890644092 is about 29843.6608344218. The cubic root of 890644092 is about 962.1321576785.

The spelling of 890644092 in words is "eight hundred ninety million, six hundred forty-four thousand, ninety-two".