890013021 has 8 divisors (see below), whose sum is σ = 1187106624. Its totient is φ = 593130720.

The previous prime is 890013017. The next prime is 890013023. The reversal of 890013021 is 120310098.

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

It is not a de Polignac number, because 890013021 - 2² = 890013017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 890012982 and 890013000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890013023) 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, 42720 + ... + 60041.

It is an arithmetic number, because the mean of its divisors is an integer number (148388328).

Almost surely, 2^890013021 is an apocalyptic number.

It is an amenable number.

890013021 is a deficient number, since it is larger than the sum of its proper divisors (297093603).

890013021 is a wasteful number, since it uses less digits than its factorization.

890013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105651.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 890013021 is about 29833.0860120102. The cubic root of 890013021 is about 961.9048625594.

The spelling of 890013021 in words is "eight hundred ninety million, thirteen thousand, twenty-one".