10863989 has 4 divisors (see below), whose sum is σ = 10911660. Its totient is φ = 10816320.

The previous prime is 10863973. The next prime is 10864093. The reversal of 10863989 is 98936801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98936801 = 107 ⋅924643.

It can be written as a sum of positive squares in 2 ways, for example, as 7562500 + 3301489 = 2750^2 + 1817^2 .

It is a cyclic number.

It is not a de Polignac number, because 10863989 - 2⁴ = 10863973 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 (10863949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23492 + ... + 23949.

It is an arithmetic number, because the mean of its divisors is an integer number (2727915).

Almost surely, 2^10863989 is an apocalyptic number.

It is an amenable number.

10863989 is a deficient number, since it is larger than the sum of its proper divisors (47671).

10863989 is an equidigital number, since it uses as much as digits as its factorization.

10863989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47670.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 10863989 is about 3296.0565832522. The cubic root of 10863989 is about 221.4775814809.

The spelling of 10863989 in words is "ten million, eight hundred sixty-three thousand, nine hundred eighty-nine".