194399040 has 224 divisors, whose sum is σ = 691286400. Its totient is φ = 45875200.

The previous prime is 194399017. The next prime is 194399053. The reversal of 194399040 is 40993491.

It is a self number, because there is not a number n which added to its sum of digits gives 194399040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 432736 + ... + 433184.

It is an arithmetic number, because the mean of its divisors is an integer number (3086100).

Almost surely, 2^194399040 is an apocalyptic number.

194399040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194399040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345643200).

194399040 is an abundant number, since it is smaller than the sum of its proper divisors (496887360).

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

194399040 is a wasteful number, since it uses less digits than its factorization.

194399040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 194399040 is about 13942.7056197856. The cubic root of 194399040 is about 579.2926771920.

The spelling of 194399040 in words is "one hundred ninety-four million, three hundred ninety-nine thousand, forty".