194999949 has 12 divisors (see below), whose sum is σ = 285871456. Its totient is φ = 128059272.

The previous prime is 194999941. The next prime is 194999989. The reversal of 194999949 is 949999491.

194999949 is a `hidden beast` number, since 19 + 499 + 99 + 49 = 666.

It is not a de Polignac number, because 194999949 - 2³ = 194999941 is a prime.

It is a super-2 number, since 2×194999949² = 76049960220005202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194999941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161089 + ... + 162294.

Almost surely, 2^194999949 is an apocalyptic number.

It is an amenable number.

194999949 is a deficient number, since it is larger than the sum of its proper divisors (90871507).

194999949 is a wasteful number, since it uses less digits than its factorization.

194999949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323456 (or 323453 counting only the distinct ones).

The product of its digits is 8503056, while the sum is 63.

The square root of 194999949 is about 13964.2382176759. The cubic root of 194999949 is about 579.8889492105. Note that the first 3 decimals are identical.

The spelling of 194999949 in words is "one hundred ninety-four million, nine hundred ninety-nine thousand, nine hundred forty-nine".