19938039 has 16 divisors (see below), whose sum is σ = 29082240. Its totient is φ = 12049760.

The previous prime is 19938031. The next prime is 19938041. The reversal of 19938039 is 93083991.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19938039 - 2³ = 19938031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19938031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16204 + ... + 17390.

It is an arithmetic number, because the mean of its divisors is an integer number (1817640).

Almost surely, 2^19938039 is an apocalyptic number.

19938039 is a deficient number, since it is larger than the sum of its proper divisors (9144201).

19938039 is a wasteful number, since it uses less digits than its factorization.

19938039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 19938039 is about 4465.2031308777. The cubic root of 19938039 is about 271.1611583020.

The spelling of 19938039 in words is "nineteen million, nine hundred thirty-eight thousand, thirty-nine".