19914423 has 4 divisors (see below), whose sum is σ = 26552568. Its totient is φ = 13276280.

The previous prime is 19914371. The next prime is 19914449. The reversal of 19914423 is 32441991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19914423 - 2⁹ = 19913911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19914523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3319068 + ... + 3319073.

It is an arithmetic number, because the mean of its divisors is an integer number (6638142).

Almost surely, 2^19914423 is an apocalyptic number.

19914423 is a deficient number, since it is larger than the sum of its proper divisors (6638145).

19914423 is an equidigital number, since it uses as much as digits as its factorization.

19914423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638144.

The product of its digits is 7776, while the sum is 33.

The square root of 19914423 is about 4462.5578987841. The cubic root of 19914423 is about 271.0540552928.

The spelling of 19914423 in words is "nineteen million, nine hundred fourteen thousand, four hundred twenty-three".