19140039 has 12 divisors (see below), whose sum is σ = 27704872. Its totient is φ = 12733200.

The previous prime is 19139999. The next prime is 19140059. The reversal of 19140039 is 93004191.

It is not a de Polignac number, because 19140039 - 2²¹ = 17042887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19139994 and 19140021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19140059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2904 + ... + 6834.

Almost surely, 2^19140039 is an apocalyptic number.

19140039 is a deficient number, since it is larger than the sum of its proper divisors (8564833).

19140039 is a wasteful number, since it uses less digits than its factorization.

19140039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478 (or 4475 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 19140039 is about 4374.9330280588. The cubic root of 19140039 is about 267.4941402624.

The spelling of 19140039 in words is "nineteen million, one hundred forty thousand, thirty-nine".