890082921 has 32 divisors (see below), whose sum is σ = 1463246848. Its totient is φ = 468659520.

The previous prime is 890082917. The next prime is 890082931. The reversal of 890082921 is 129280098.

890082921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 890082921 - 2² = 890082917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 890082921.

It is not an unprimeable number, because it can be changed into a prime (890082931) 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, 169680 + ... + 174846.

It is an arithmetic number, because the mean of its divisors is an integer number (45726464).

Almost surely, 2^890082921 is an apocalyptic number.

It is an amenable number.

890082921 is a deficient number, since it is larger than the sum of its proper divisors (573163927).

890082921 is a wasteful number, since it uses less digits than its factorization.

890082921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5821.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 890082921 is about 29834.2575071008. The cubic root of 890082921 is about 961.9300439849.

The spelling of 890082921 in words is "eight hundred ninety million, eighty-two thousand, nine hundred twenty-one".