194439834 has 12 divisors (see below), whose sum is σ = 421286346. Its totient is φ = 64813272.

The previous prime is 194439823. The next prime is 194439859. The reversal of 194439834 is 438934491.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 170380809 + 24059025 = 13053^2 + 4905^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 194439834.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5401089 + ... + 5401124.

Almost surely, 2^194439834 is an apocalyptic number.

194439834 is an abundant number, since it is smaller than the sum of its proper divisors (226846512).

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

194439834 is a wasteful number, since it uses less digits than its factorization.

194439834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10802221 (or 10802218 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 194439834 is about 13944.1684585349. The cubic root of 194439834 is about 579.3331952465. Note that the first 3 decimals are identical.

The spelling of 194439834 in words is "one hundred ninety-four million, four hundred thirty-nine thousand, eight hundred thirty-four".