19690489 has 8 divisors (see below), whose sum is σ = 24234560. Its totient is φ = 15579216.

The previous prime is 19690481. The next prime is 19690511. The reversal of 19690489 is 98409691.

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 19690489 - 2³ = 19690481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19690481) 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, 108099 + ... + 108280.

It is an arithmetic number, because the mean of its divisors is an integer number (3029320).

Almost surely, 2^19690489 is an apocalyptic number.

It is an amenable number.

19690489 is a deficient number, since it is larger than the sum of its proper divisors (4544071).

19690489 is a wasteful number, since it uses less digits than its factorization.

19690489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216399.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 19690489 is about 4437.3966466837. The cubic root of 19690489 is about 270.0342389136.

The spelling of 19690489 in words is "nineteen million, six hundred ninety thousand, four hundred eighty-nine".