1206204399 has 16 divisors (see below), whose sum is σ = 1787568640. Its totient is φ = 803866680.

The previous prime is 1206204371. The next prime is 1206204413. The reversal of 1206204399 is 9934026021.

1206204399 is a `hidden beast` number, since 1 + 20 + 620 + 4 + 3 + 9 + 9 = 666.

It is not a de Polignac number, because 1206204399 - 2¹⁷ = 1206073327 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 (1206204199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105564 + ... + 116430.

It is an arithmetic number, because the mean of its divisors is an integer number (111723040).

Almost surely, 2^1206204399 is an apocalyptic number.

1206204399 is a deficient number, since it is larger than the sum of its proper divisors (581364241).

1206204399 is a wasteful number, since it uses less digits than its factorization.

1206204399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14987 (or 14981 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1206204399 is about 34730.4534810590. The cubic root of 1206204399 is about 1064.4868545581.

The spelling of 1206204399 in words is "one billion, two hundred six million, two hundred four thousand, three hundred ninety-nine".