891490 has 16 divisors (see below), whose sum is σ = 1632960. Its totient is φ = 350320.

The previous prime is 891487. The next prime is 891491. The reversal of 891490 is 94198.

891490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (891491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166 + ... + 1345.

It is an arithmetic number, because the mean of its divisors is an integer number (102060).

2⁸⁹¹⁴⁹⁰ is an apocalyptic number.

891490 is a deficient number, since it is larger than the sum of its proper divisors (741470).

891490 is a wasteful number, since it uses less digits than its factorization.

891490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 891490 is about 944.1874813828. The cubic root of 891490 is about 96.2436663061.

The spelling of 891490 in words is "eight hundred ninety-one thousand, four hundred ninety".