19999292 has 6 divisors (see below), whose sum is σ = 34998768. Its totient is φ = 9999644.

The previous prime is 19999283. The next prime is 19999297. The reversal of 19999292 is 29299991.

It is a self number, because there is not a number n which added to its sum of digits gives 19999292.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19999297) 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 as a sum of consecutive naturals, namely, 2499908 + ... + 2499915.

It is an arithmetic number, because the mean of its divisors is an integer number (5833128).

Almost surely, 2^19999292 is an apocalyptic number.

It is an amenable number.

19999292 is a deficient number, since it is larger than the sum of its proper divisors (14999476).

19999292 is a wasteful number, since it uses less digits than its factorization.

19999292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999827 (or 4999825 counting only the distinct ones).

The product of its digits is 236196, while the sum is 50.

The square root of 19999292 is about 4472.0567974926. The cubic root of 19999292 is about 271.4385586089.

The spelling of 19999292 in words is "nineteen million, nine hundred ninety-nine thousand, two hundred ninety-two".