194399149 has 8 divisors (see below), whose sum is σ = 222298560. Its totient is φ = 166531776.

The previous prime is 194399143. The next prime is 194399239. The reversal of 194399149 is 941993491.

It is a happy number.

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 194399149 - 2³ = 194399141 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 (194399141) 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, 6837 + ... + 20869.

It is an arithmetic number, because the mean of its divisors is an integer number (27787320).

Almost surely, 2^194399149 is an apocalyptic number.

It is an amenable number.

194399149 is a deficient number, since it is larger than the sum of its proper divisors (27899411).

194399149 is a wasteful number, since it uses less digits than its factorization.

194399149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16019.

The product of its digits is 314928, while the sum is 49.

The square root of 194399149 is about 13942.7095286390. The cubic root of 194399149 is about 579.2927854623.

The spelling of 194399149 in words is "one hundred ninety-four million, three hundred ninety-nine thousand, one hundred forty-nine".