1204440655 has 48 divisors (see below), whose sum is σ = 1676106432. Its totient is φ = 828608000.

The previous prime is 1204440637. The next prime is 1204440689. The reversal of 1204440655 is 5560444021.

It is a happy number.

It is not a de Polignac number, because 1204440655 - 2⁵ = 1204440623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1404987 + ... + 1405843.

It is an arithmetic number, because the mean of its divisors is an integer number (34918884).

Almost surely, 2^1204440655 is an apocalyptic number.

1204440655 is a deficient number, since it is larger than the sum of its proper divisors (471665777).

1204440655 is a wasteful number, since it uses less digits than its factorization.

1204440655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 1204440655 is about 34705.0522979004. The cubic root of 1204440655 is about 1063.9677611800.

Adding to 1204440655 its reverse (5560444021), we get a palindrome (6764884676).

The spelling of 1204440655 in words is "one billion, two hundred four million, four hundred forty thousand, six hundred fifty-five".