194990006 has 4 divisors (see below), whose sum is σ = 292485012. Its totient is φ = 97495002.

The previous prime is 194989999. The next prime is 194990039. The reversal of 194990006 is 600099491.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×194990006² = 76042204879760072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48747500 + ... + 48747503.

It is an arithmetic number, because the mean of its divisors is an integer number (73121253).

Almost surely, 2^194990006 is an apocalyptic number.

194990006 is a deficient number, since it is larger than the sum of its proper divisors (97495006).

194990006 is an equidigital number, since it uses as much as digits as its factorization.

194990006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97495005.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 194990006 is about 13963.8821965813. The cubic root of 194990006 is about 579.8790929108.

The spelling of 194990006 in words is "one hundred ninety-four million, nine hundred ninety thousand, six".