199490656 has 24 divisors (see below), whose sum is σ = 393062544. Its totient is φ = 99665280.

The previous prime is 199490653. The next prime is 199490657. The reversal of 199490656 is 656094991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199490651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73581 + ... + 76243.

It is an arithmetic number, because the mean of its divisors is an integer number (16377606).

Almost surely, 2^199490656 is an apocalyptic number.

199490656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

199490656 is a deficient number, since it is larger than the sum of its proper divisors (193571888).

199490656 is a wasteful number, since it uses less digits than its factorization.

199490656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014 (or 5006 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 199490656 is about 14124.1161139379. The cubic root of 199490656 is about 584.3066819807.

The spelling of 199490656 in words is "one hundred ninety-nine million, four hundred ninety thousand, six hundred fifty-six".