194789401 has 8 divisors (see below), whose sum is σ = 200771424. Its totient is φ = 188866080.

The previous prime is 194789393. The next prime is 194789407. The reversal of 194789401 is 104987491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 194789401 - 2³ = 194789393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194789407) 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 7 ways as a sum of consecutive naturals, for example, 7891 + ... + 21256.

It is an arithmetic number, because the mean of its divisors is an integer number (25096428).

Almost surely, 2^194789401 is an apocalyptic number.

It is an amenable number.

194789401 is a deficient number, since it is larger than the sum of its proper divisors (5982023).

194789401 is a wasteful number, since it uses less digits than its factorization.

194789401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29351.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 194789401 is about 13956.6973528840. The cubic root of 194789401 is about 579.6801655182.

The spelling of 194789401 in words is "one hundred ninety-four million, seven hundred eighty-nine thousand, four hundred one".