1304400999 has 16 divisors (see below), whose sum is σ = 1918632960. Its totient is φ = 781661760.

The previous prime is 1304400983. The next prime is 1304401013. The reversal of 1304400999 is 9990044031.

It is not a de Polignac number, because 1304400999 - 2⁴ = 1304400983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304400959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219127 + ... + 225000.

It is an arithmetic number, because the mean of its divisors is an integer number (119914560).

Almost surely, 2^1304400999 is an apocalyptic number.

1304400999 is a deficient number, since it is larger than the sum of its proper divisors (614231961).

1304400999 is a wasteful number, since it uses less digits than its factorization.

1304400999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444230.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 1304400999 is about 36116.4920638757. The cubic root of 1304400999 is about 1092.6230904743.

The spelling of 1304400999 in words is "one billion, three hundred four million, four hundred thousand, nine hundred ninety-nine".