19324989 has 24 divisors (see below), whose sum is σ = 28952352. Its totient is φ = 12411360.

The previous prime is 19324967. The next prime is 19324999. The reversal of 19324989 is 98942391.

It is not a de Polignac number, because 19324989 - 2⁹ = 19324477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19324939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43402 + ... + 43844.

It is an arithmetic number, because the mean of its divisors is an integer number (1206348).

Almost surely, 2^19324989 is an apocalyptic number.

It is an amenable number.

19324989 is a deficient number, since it is larger than the sum of its proper divisors (9627363).

19324989 is a wasteful number, since it uses less digits than its factorization.

19324989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 614 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 19324989 is about 4396.0196769350. The cubic root of 19324989 is about 268.3529775707.

The spelling of 19324989 in words is "nineteen million, three hundred twenty-four thousand, nine hundred eighty-nine".