19289994 has 16 divisors (see below), whose sum is σ = 38652768. Its totient is φ = 6417872.

The previous prime is 19289989. The next prime is 19289999. The reversal of 19289994 is 49998291.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19289989) and next prime (19289999).

It is not an unprimeable number, because it can be changed into a prime (19289999) 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, 784 + ... + 6260.

It is an arithmetic number, because the mean of its divisors is an integer number (2415798).

Almost surely, 2^19289994 is an apocalyptic number.

19289994 is the 2348-th nonagonal number.

19289994 is an abundant number, since it is smaller than the sum of its proper divisors (19362774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19289994 is a wasteful number, since it uses less digits than its factorization.

19289994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069.

The product of its digits is 419904, while the sum is 51.

The square root of 19289994 is about 4392.0375681453. The cubic root of 19289994 is about 268.1908957745.

The spelling of 19289994 in words is "nineteen million, two hundred eighty-nine thousand, nine hundred ninety-four".