19439196 has 24 divisors (see below), whose sum is σ = 51838080. Its totient is φ = 5554032.

The previous prime is 19439191. The next prime is 19439227. The reversal of 19439196 is 69193491.

It is a super-2 number, since 2×19439196² = 755764682252832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19439191) 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, 115626 + ... + 115793.

It is an arithmetic number, because the mean of its divisors is an integer number (2159920).

Almost surely, 2^19439196 is an apocalyptic number.

It is an amenable number.

19439196 is an abundant number, since it is smaller than the sum of its proper divisors (32398884).

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

19439196 is a wasteful number, since it uses less digits than its factorization.

19439196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231433 (or 231431 counting only the distinct ones).

The product of its digits is 52488, while the sum is 42.

The square root of 19439196 is about 4408.9903606155. The cubic root of 19439196 is about 268.8805779014.

The spelling of 19439196 in words is "nineteen million, four hundred thirty-nine thousand, one hundred ninety-six".