890521149 has 24 divisors (see below), whose sum is σ = 1462468608. Its totient is φ = 478934400.

The previous prime is 890521147. The next prime is 890521157. The reversal of 890521149 is 941125098.

It is not a de Polignac number, because 890521149 - 2¹ = 890521147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890521147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175677 + ... + 180674.

It is an arithmetic number, because the mean of its divisors is an integer number (60936192).

Almost surely, 2^890521149 is an apocalyptic number.

It is an amenable number.

890521149 is a deficient number, since it is larger than the sum of its proper divisors (571947459).

890521149 is a wasteful number, since it uses less digits than its factorization.

890521149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356385 (or 356378 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 890521149 is about 29841.6009791700. The cubic root of 890521149 is about 962.0878852775.

The spelling of 890521149 in words is "eight hundred ninety million, five hundred twenty-one thousand, one hundred forty-nine".