19934799 has 4 divisors (see below), whose sum is σ = 26579736. Its totient is φ = 13289864.

The previous prime is 19934791. The next prime is 19934801. The reversal of 19934799 is 99743991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19934799 - 2³ = 19934791 is a prime.

It is a super-2 number, since 2×19934799² = 794792422340802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19934791) 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, 3322464 + ... + 3322469.

It is an arithmetic number, because the mean of its divisors is an integer number (6644934).

Almost surely, 2^19934799 is an apocalyptic number.

19934799 is a deficient number, since it is larger than the sum of its proper divisors (6644937).

19934799 is an equidigital number, since it uses as much as digits as its factorization.

19934799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6644936.

The product of its digits is 551124, while the sum is 51.

The square root of 19934799 is about 4464.8403106942. The cubic root of 19934799 is about 271.1464692990.

The spelling of 19934799 in words is "nineteen million, nine hundred thirty-four thousand, seven hundred ninety-nine".