890149 has 4 divisors (see below), whose sum is σ = 958636. Its totient is φ = 821664.

The previous prime is 890147. The next prime is 890159. The reversal of 890149 is 941098.

890149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 112225 + 777924 = 335^2 + 882^2 .

It is a cyclic number.

It is not a de Polignac number, because 890149 - 2¹ = 890147 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 890149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34224 + ... + 34249.

It is an arithmetic number, because the mean of its divisors is an integer number (239659).

2⁸⁹⁰¹⁴⁹ is an apocalyptic number.

It is an amenable number.

890149 is a deficient number, since it is larger than the sum of its proper divisors (68487).

890149 is a wasteful number, since it uses less digits than its factorization.

890149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68486.

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

The square root of 890149 is about 943.4770797428. The cubic root of 890149 is about 96.1953847686.

The spelling of 890149 in words is "eight hundred ninety thousand, one hundred forty-nine".