194422399 has 2 divisors, whose sum is σ = 194422400. Its totient is φ = 194422398.

The previous prime is 194422379. The next prime is 194422439. The reversal of 194422399 is 993224491.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194422399 - 2¹¹ = 194420351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194422339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97211199 + 97211200.

It is an arithmetic number, because the mean of its divisors is an integer number (97211200).

Almost surely, 2^194422399 is an apocalyptic number.

194422399 is a deficient number, since it is larger than the sum of its proper divisors (1).

194422399 is an equidigital number, since it uses as much as digits as its factorization.

194422399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 194422399 is about 13943.5432727840. The cubic root of 194422399 is about 579.3158788767.

The spelling of 194422399 in words is "one hundred ninety-four million, four hundred twenty-two thousand, three hundred ninety-nine".