10003989 has 4 divisors (see below), whose sum is σ = 13338656. Its totient is φ = 6669324.

The previous prime is 10003957. The next prime is 10003999. The reversal of 10003989 is 98930001.

It is a happy number.

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: 98930001 = 3 ⋅32976667.

It is not a de Polignac number, because 10003989 - 2⁵ = 10003957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10003999) 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, 1667329 + ... + 1667334.

It is an arithmetic number, because the mean of its divisors is an integer number (3334664).

Almost surely, 2^10003989 is an apocalyptic number.

It is an amenable number.

10003989 is a deficient number, since it is larger than the sum of its proper divisors (3334667).

10003989 is an equidigital number, since it uses as much as digits as its factorization.

10003989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334666.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 10003989 is about 3162.9083135621. The cubic root of 10003989 is about 215.4721119949.

It can be divided in two parts, 100039 and 89, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 10003989 in words is "ten million, three thousand, nine hundred eighty-nine".