1004398205 has 8 divisors (see below), whose sum is σ = 1205540952. Its totient is φ = 803343168.

The previous prime is 1004398181. The next prime is 1004398207. The reversal of 1004398205 is 5028934001.

It can be written as a sum of positive squares in 4 ways, for example, as 3118756 + 1001279449 = 1766^2 + 31643^2 .

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 1004398205 - 2⁸ = 1004397949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004398207) 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, 6659 + ... + 45311.

It is an arithmetic number, because the mean of its divisors is an integer number (150692619).

Almost surely, 2^1004398205 is an apocalyptic number.

It is an amenable number.

1004398205 is a deficient number, since it is larger than the sum of its proper divisors (201142747).

1004398205 is an equidigital number, since it uses as much as digits as its factorization.

1004398205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43855.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1004398205 is about 31692.2420317654. The cubic root of 1004398205 is about 1001.4639242135.

The spelling of 1004398205 in words is "one billion, four million, three hundred ninety-eight thousand, two hundred five".