199977796 has 12 divisors (see below), whose sum is σ = 353359552. Its totient is φ = 99017928.

The previous prime is 199977779. The next prime is 199977797. The reversal of 199977796 is 697779991.

It is a super-2 number, since 2×199977796² = 79982237786035232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199977797) 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, 242280 + ... + 243103.

Almost surely, 2^199977796 is an apocalyptic number.

It is an amenable number.

199977796 is a deficient number, since it is larger than the sum of its proper divisors (153381756).

199977796 is a wasteful number, since it uses less digits than its factorization.

199977796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485490 (or 485488 counting only the distinct ones).

The product of its digits is 13502538, while the sum is 64.

The square root of 199977796 is about 14141.3505719928. The cubic root of 199977796 is about 584.7819052117.

The spelling of 199977796 in words is "one hundred ninety-nine million, nine hundred seventy-seven thousand, seven hundred ninety-six".