1304333993 has 8 divisors (see below), whose sum is σ = 1381868712. Its totient is φ = 1226889216.

The previous prime is 1304333977. The next prime is 1304334001. The reversal of 1304333993 is 3993334031.

It can be written as a sum of positive squares in 4 ways, for example, as 413430889 + 890903104 = 20333^2 + 29848^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1304333993 - 2⁴ = 1304333977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1304333963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8621 + ... + 51797.

It is an arithmetic number, because the mean of its divisors is an integer number (172733589).

Almost surely, 2^1304333993 is an apocalyptic number.

It is an amenable number.

1304333993 is a deficient number, since it is larger than the sum of its proper divisors (77534719).

1304333993 is a wasteful number, since it uses less digits than its factorization.

1304333993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44971.

The product of its (nonzero) digits is 78732, while the sum is 38.

The square root of 1304333993 is about 36115.5644148060. The cubic root of 1304333993 is about 1092.6043811059.

Adding to 1304333993 its sum of digits (38), we get a palindrome (1304334031).

The spelling of 1304333993 in words is "one billion, three hundred four million, three hundred thirty-three thousand, nine hundred ninety-three".