19936423 has 18 divisors (see below), whose sum is σ = 22668576. Its totient is φ = 17523792.

The previous prime is 19936409. The next prime is 19936429. The reversal of 19936423 is 32463991.

It is not a de Polignac number, because 19936423 - 2¹³ = 19928231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19936429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 89290 + ... + 89512.

Almost surely, 2^19936423 is an apocalyptic number.

19936423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

19936423 is a deficient number, since it is larger than the sum of its proper divisors (2732153).

19936423 is a wasteful number, since it uses less digits than its factorization.

19936423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 259 counting only the distinct ones).

The product of its digits is 34992, while the sum is 37.

The square root of 19936423 is about 4465.0221723974. The cubic root of 19936423 is about 271.1538321340.

The spelling of 19936423 in words is "nineteen million, nine hundred thirty-six thousand, four hundred twenty-three".