36199821 has 8 divisors (see below), whose sum is σ = 55161664. Its totient is φ = 20685600.

The previous prime is 36199789. The next prime is 36199829. The reversal of 36199821 is 12899163.

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

It is not a de Polignac number, because 36199821 - 2⁵ = 36199789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36199821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36199829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 861880 + ... + 861921.

It is an arithmetic number, because the mean of its divisors is an integer number (6895208).

Almost surely, 2^36199821 is an apocalyptic number.

It is an amenable number.

36199821 is a deficient number, since it is larger than the sum of its proper divisors (18961843).

36199821 is a wasteful number, since it uses less digits than its factorization.

36199821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723811.

The product of its digits is 23328, while the sum is 39.

The square root of 36199821 is about 6016.6287071748. The cubic root of 36199821 is about 330.8025187852.

The spelling of 36199821 in words is "thirty-six million, one hundred ninety-nine thousand, eight hundred twenty-one".