1204408397 has 4 divisors (see below), whose sum is σ = 1205511420. Its totient is φ = 1203305376.

The previous prime is 1204408391. The next prime is 1204408427. The reversal of 1204408397 is 7938044021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 867832681 + 336575716 = 29459^2 + 18346^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204408397 - 2¹⁶ = 1204342861 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 1204408397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204408391) 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, 549872 + ... + 552057.

It is an arithmetic number, because the mean of its divisors is an integer number (301377855).

Almost surely, 2^1204408397 is an apocalyptic number.

It is an amenable number.

1204408397 is a deficient number, since it is larger than the sum of its proper divisors (1103023).

1204408397 is a wasteful number, since it uses less digits than its factorization.

1204408397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103022.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1204408397 is about 34704.5875497750. The cubic root of 1204408397 is about 1063.9582625029.

The spelling of 1204408397 in words is "one billion, two hundred four million, four hundred eight thousand, three hundred ninety-seven".