19893914 has 4 divisors (see below), whose sum is σ = 29840874. Its totient is φ = 9946956.

The previous prime is 19893911. The next prime is 19893943. The reversal of 19893914 is 41939891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41939891 = 7 ⋅5991413.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 8025889 = 3445^2 + 2833^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19893911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973477 + ... + 4973480.

Almost surely, 2^19893914 is an apocalyptic number.

19893914 is a deficient number, since it is larger than the sum of its proper divisors (9946960).

19893914 is an equidigital number, since it uses as much as digits as its factorization.

19893914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9946959.

The product of its digits is 69984, while the sum is 44.

The square root of 19893914 is about 4460.2594094963. The cubic root of 19893914 is about 270.9609743961.

The spelling of 19893914 in words is "nineteen million, eight hundred ninety-three thousand, nine hundred fourteen".