19423349 has 4 divisors (see below), whose sum is σ = 21189120. Its totient is φ = 17657580.

The previous prime is 19423343. The next prime is 19423357. The reversal of 19423349 is 94332491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19423349 is a prime.

It is a super-3 number, since 3×19423349³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19423343) 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, 882869 + ... + 882890.

It is an arithmetic number, because the mean of its divisors is an integer number (5297280).

Almost surely, 2^19423349 is an apocalyptic number.

It is an amenable number.

19423349 is a deficient number, since it is larger than the sum of its proper divisors (1765771).

19423349 is a wasteful number, since it uses less digits than its factorization.

19423349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765770.

The product of its digits is 23328, while the sum is 35.

The square root of 19423349 is about 4407.1928707512. The cubic root of 19423349 is about 268.8074934505.

The spelling of 19423349 in words is "nineteen million, four hundred twenty-three thousand, three hundred forty-nine".