1304404001 has 4 divisors (see below), whose sum is σ = 1304921904. Its totient is φ = 1303886100.

The previous prime is 1304403973. The next prime is 1304404009. The reversal of 1304404001 is 1004044031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1004044031 = 53 ⋅18944227.

It is a cyclic number.

It is not a de Polignac number, because 1304404001 - 2²² = 1300209697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304404009) 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, 255155 + ... + 260216.

It is an arithmetic number, because the mean of its divisors is an integer number (326230476).

Almost surely, 2^1304404001 is an apocalyptic number.

It is an amenable number.

1304404001 is a deficient number, since it is larger than the sum of its proper divisors (517903).

1304404001 is an equidigital number, since it uses as much as digits as its factorization.

1304404001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517902.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1304404001 is about 36116.5336238128. The cubic root of 1304404001 is about 1092.6239286757.

Adding to 1304404001 its reverse (1004044031), we get a palindrome (2308448032).

The spelling of 1304404001 in words is "one billion, three hundred four million, four hundred four thousand, one".