19399344 has 40 divisors (see below), whose sum is σ = 51187200. Its totient is φ = 6328128.

The previous prime is 19399343. The next prime is 19399349. The reversal of 19399344 is 44399391.

It is a junction number, because it is equal to n+sod(n) for n = 19399296 and 19399305.

It is not an unprimeable number, because it can be changed into a prime (19399343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2044 + ... + 6555.

It is an arithmetic number, because the mean of its divisors is an integer number (1279680).

Almost surely, 2^19399344 is an apocalyptic number.

It is an amenable number.

19399344 is an abundant number, since it is smaller than the sum of its proper divisors (31787856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19399344 is a wasteful number, since it uses less digits than its factorization.

19399344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8657 (or 8651 counting only the distinct ones).

The product of its digits is 104976, while the sum is 42.

The square root of 19399344 is about 4404.4686399156. The cubic root of 19399344 is about 268.6967095347.

The spelling of 19399344 in words is "nineteen million, three hundred ninety-nine thousand, three hundred forty-four".