10563989 has 4 divisors (see below), whose sum is σ = 10666656. Its totient is φ = 10461324.

The previous prime is 10563977. The next prime is 10563997. The reversal of 10563989 is 98936501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98936501 = 23 ⋅4301587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10563989 is a prime.

It is a super-2 number, since 2×10563989² = 223195727184242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10563929) 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, 51179 + ... + 51384.

It is an arithmetic number, because the mean of its divisors is an integer number (2666664).

Almost surely, 2^10563989 is an apocalyptic number.

It is an amenable number.

10563989 is a deficient number, since it is larger than the sum of its proper divisors (102667).

10563989 is a wasteful number, since it uses less digits than its factorization.

10563989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102666.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 10563989 is about 3250.2290688504. The cubic root of 10563989 is about 219.4198834850.

The spelling of 10563989 in words is "ten million, five hundred sixty-three thousand, nine hundred eighty-nine".