890539621 has 8 divisors (see below), whose sum is σ = 898257920. Its totient is φ = 882832608.

The previous prime is 890539613. The next prime is 890539649. The reversal of 890539621 is 126935098.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 890539621 - 2³ = 890539613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890539651) 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, 250585 + ... + 254113.

It is an arithmetic number, because the mean of its divisors is an integer number (112282240).

Almost surely, 2^890539621 is an apocalyptic number.

It is an amenable number.

890539621 is a deficient number, since it is larger than the sum of its proper divisors (7718299).

890539621 is a wasteful number, since it uses less digits than its factorization.

890539621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 890539621 is about 29841.9104783859. The cubic root of 890539621 is about 962.0945373990.

The spelling of 890539621 in words is "eight hundred ninety million, five hundred thirty-nine thousand, six hundred twenty-one".