199649862 has 48 divisors (see below), whose sum is σ = 452219040. Its totient is φ = 63576576.

The previous prime is 199649851. The next prime is 199649897. The reversal of 199649862 is 268946991.

199649862 is a `hidden beast` number, since 1 + 9 + 96 + 498 + 62 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 199649799 and 199649808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48663 + ... + 52605.

It is an arithmetic number, because the mean of its divisors is an integer number (9421230).

Almost surely, 2^199649862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199649862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226109520).

199649862 is an abundant number, since it is smaller than the sum of its proper divisors (252569178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199649862 is a wasteful number, since it uses less digits than its factorization.

199649862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077 (or 4074 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 199649862 is about 14129.7509532192. The cubic root of 199649862 is about 584.4620783884.

The spelling of 199649862 in words is "one hundred ninety-nine million, six hundred forty-nine thousand, eight hundred sixty-two".