19908049 has 8 divisors (see below), whose sum is σ = 23064320. Its totient is φ = 16829856.

The previous prime is 19908023. The next prime is 19908059. The reversal of 19908049 is 94080991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19908049 - 2⁵ = 19908017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19908059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18969 + ... + 19990.

It is an arithmetic number, because the mean of its divisors is an integer number (2883040).

Almost surely, 2^19908049 is an apocalyptic number.

It is an amenable number.

19908049 is a deficient number, since it is larger than the sum of its proper divisors (3156271).

19908049 is an equidigital number, since it uses as much as digits as its factorization.

19908049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39039.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 19908049 is about 4461.8436772258. The cubic root of 19908049 is about 271.0251334923.

The spelling of 19908049 in words is "nineteen million, nine hundred eight thousand, forty-nine".