1204459987 has 8 divisors (see below), whose sum is σ = 1250499600. Its totient is φ = 1158720864.

The previous prime is 1204459973. The next prime is 1204460009. The reversal of 1204459987 is 7899544021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1204459987 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 1204459987.

It is not an unprimeable number, because it can be changed into a prime (1204459937) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 66937 + ... + 83002.

It is an arithmetic number, because the mean of its divisors is an integer number (156312450).

Almost surely, 2^1204459987 is an apocalyptic number.

1204459987 is a deficient number, since it is larger than the sum of its proper divisors (46039613).

1204459987 is a wasteful number, since it uses less digits than its factorization.

1204459987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150245.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 1204459987 is about 34705.3308153085. The cubic root of 1204459987 is about 1063.9734535913.

The spelling of 1204459987 in words is "one billion, two hundred four million, four hundred fifty-nine thousand, nine hundred eighty-seven".