19989095 has 16 divisors (see below), whose sum is σ = 27604800. Its totient is φ = 13611264.

The previous prime is 19989089. The next prime is 19989103. The reversal of 19989095 is 59098991.

It is a cyclic number.

It is not a de Polignac number, because 19989095 - 2¹⁶ = 19923559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3299 + ... + 7131.

It is an arithmetic number, because the mean of its divisors is an integer number (1725300).

Almost surely, 2^19989095 is an apocalyptic number.

19989095 is a deficient number, since it is larger than the sum of its proper divisors (7615705).

19989095 is a wasteful number, since it uses less digits than its factorization.

19989095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994.

The product of its (nonzero) digits is 262440, while the sum is 50.

The square root of 19989095 is about 4470.9165726951. The cubic root of 19989095 is about 271.3924181500.

The spelling of 19989095 in words is "nineteen million, nine hundred eighty-nine thousand, ninety-five".