194479421 has 8 divisors (see below), whose sum is σ = 213616320. Its totient is φ = 176232672.

The previous prime is 194479403. The next prime is 194479427. The reversal of 194479421 is 124974491.

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 194479421 - 2¹⁴ = 194463037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194479427) 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, 222080 + ... + 222953.

It is an arithmetic number, because the mean of its divisors is an integer number (26702040).

Almost surely, 2^194479421 is an apocalyptic number.

It is an amenable number.

194479421 is a deficient number, since it is larger than the sum of its proper divisors (19136899).

194479421 is a wasteful number, since it uses less digits than its factorization.

194479421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445075.

The product of its digits is 72576, while the sum is 41.

The square root of 194479421 is about 13945.5878685698. The cubic root of 194479421 is about 579.3725090477.

The spelling of 194479421 in words is "one hundred ninety-four million, four hundred seventy-nine thousand, four hundred twenty-one".