19286989 has 8 divisors (see below), whose sum is σ = 19514880. Its totient is φ = 19060800.

The previous prime is 19286983. The next prime is 19287013. The reversal of 19286989 is 98968291.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19286989 is a prime.

It is a super-2 number, since 2×19286989² = 743975889372242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19286983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45822 + ... + 46240.

It is an arithmetic number, because the mean of its divisors is an integer number (2439360).

Almost surely, 2^19286989 is an apocalyptic number.

It is an amenable number.

19286989 is a deficient number, since it is larger than the sum of its proper divisors (227891).

19286989 is a wasteful number, since it uses less digits than its factorization.

19286989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851.

The product of its digits is 559872, while the sum is 52.

The square root of 19286989 is about 4391.6954584761. The cubic root of 19286989 is about 268.1769687701.

The spelling of 19286989 in words is "nineteen million, two hundred eighty-six thousand, nine hundred eighty-nine".