194404401 has 32 divisors (see below), whose sum is σ = 313217280. Its totient is φ = 118672128.

The previous prime is 194404387. The next prime is 194404423. The reversal of 194404401 is 104404491.

It is not a de Polignac number, because 194404401 - 2¹¹ = 194402353 is a prime.

It is a super-2 number, since 2×194404401² = 75586142256337602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (194404471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11260 + ... + 22706.

It is an arithmetic number, because the mean of its divisors is an integer number (9788040).

Almost surely, 2^194404401 is an apocalyptic number.

It is an amenable number.

194404401 is a deficient number, since it is larger than the sum of its proper divisors (118812879).

194404401 is a wasteful number, since it uses less digits than its factorization.

194404401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11510 (or 11504 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 194404401 is about 13942.8978695248. The cubic root of 194404401 is about 579.2980022518.

Adding to 194404401 its reverse (104404491), we get a palindrome (298808892).

The spelling of 194404401 in words is "one hundred ninety-four million, four hundred four thousand, four hundred one".