1220799 has 8 divisors (see below), whose sum is σ = 1635760. Its totient is φ = 809856.

The previous prime is 1220797. The next prime is 1220801. The reversal of 1220799 is 9970221.

It is an interprime number because it is at equal distance from previous prime (1220797) and next prime (1220801).

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

It is not a de Polignac number, because 1220799 - 2¹ = 1220797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (204470).

2^1220799 is an apocalyptic number.

1220799 is a deficient number, since it is larger than the sum of its proper divisors (414961).

1220799 is a wasteful number, since it uses less digits than its factorization.

1220799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 1220799 is about 1104.8977328242. The cubic root of 1220799 is about 106.8762945707.

The spelling of 1220799 in words is "one million, two hundred twenty thousand, seven hundred ninety-nine".