890525409 has 8 divisors (see below), whose sum is σ = 1207492320. Its totient is φ = 583621056.

The previous prime is 890525407. The next prime is 890525413. The reversal of 890525409 is 904525098.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 890525409 - 2¹ = 890525407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (890525401) 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, 2515432 + ... + 2515785.

It is an arithmetic number, because the mean of its divisors is an integer number (150936540).

Almost surely, 2^890525409 is an apocalyptic number.

It is an amenable number.

890525409 is a deficient number, since it is larger than the sum of its proper divisors (316966911).

890525409 is a wasteful number, since it uses less digits than its factorization.

890525409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031279.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 890525409 is about 29841.6723559522. The cubic root of 890525409 is about 962.0894193934.

The spelling of 890525409 in words is "eight hundred ninety million, five hundred twenty-five thousand, four hundred nine".