19140399 has 12 divisors (see below), whose sum is σ = 28322112. Its totient is φ = 12448800.

The previous prime is 19140383. The next prime is 19140427. The reversal of 19140399 is 99304191.

It is not a de Polignac number, because 19140399 - 2⁴ = 19140383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19140349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25567 + ... + 26304.

It is an arithmetic number, because the mean of its divisors is an integer number (2360176).

Almost surely, 2^19140399 is an apocalyptic number.

19140399 is a deficient number, since it is larger than the sum of its proper divisors (9181713).

19140399 is a wasteful number, since it uses less digits than its factorization.

19140399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51918 (or 51915 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 19140399 is about 4374.9741713523. The cubic root of 19140399 is about 267.4958173277.

The spelling of 19140399 in words is "nineteen million, one hundred forty thousand, three hundred ninety-nine".