10423989 has 24 divisors (see below), whose sum is σ = 16199040. Its totient is φ = 6438528.

The previous prime is 10423981. The next prime is 10423999. The reversal of 10423989 is 98932401.

It is not a de Polignac number, because 10423989 - 2³ = 10423981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10423981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7389 + ... + 8685.

It is an arithmetic number, because the mean of its divisors is an integer number (674960).

Almost surely, 2^10423989 is an apocalyptic number.

10423989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

10423989 is a deficient number, since it is larger than the sum of its proper divisors (5775051).

10423989 is a wasteful number, since it uses less digits than its factorization.

10423989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369 (or 1366 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 10423989 is about 3228.6202935619. The cubic root of 10423989 is about 218.4462773770.

The spelling of 10423989 in words is "ten million, four hundred twenty-three thousand, nine hundred eighty-nine".