199986494 has 8 divisors (see below), whose sum is σ = 310323960. Its totient is φ = 96545176.

The previous prime is 199986461. The next prime is 199986529. The reversal of 199986494 is 494689991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1723964 + ... + 1724079.

It is an arithmetic number, because the mean of its divisors is an integer number (38790495).

Almost surely, 2^199986494 is an apocalyptic number.

199986494 is a deficient number, since it is larger than the sum of its proper divisors (110337466).

199986494 is a wasteful number, since it uses less digits than its factorization.

199986494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448074.

The product of its digits is 5038848, while the sum is 59.

The square root of 199986494 is about 14141.6581064598. The cubic root of 199986494 is about 584.7903834184.

The spelling of 199986494 in words is "one hundred ninety-nine million, nine hundred eighty-six thousand, four hundred ninety-four".