19889007 has 8 divisors (see below), whose sum is σ = 26629680. Its totient is φ = 13203840.

The previous prime is 19888969. The next prime is 19889027. The reversal of 19889007 is 70098891.

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

It is not a de Polignac number, because 19889007 - 2¹⁴ = 19872623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19889007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19889027) 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, 13032 + ... + 14477.

It is an arithmetic number, because the mean of its divisors is an integer number (3328710).

Almost surely, 2^19889007 is an apocalyptic number.

19889007 is a deficient number, since it is larger than the sum of its proper divisors (6740673).

19889007 is a wasteful number, since it uses less digits than its factorization.

19889007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27753.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 19889007 is about 4459.7092954586. The cubic root of 19889007 is about 270.9386943018.

The spelling of 19889007 in words is "nineteen million, eight hundred eighty-nine thousand, seven".