1405404304 has 20 divisors (see below), whose sum is σ = 2736799164. Its totient is φ = 699133568.

The previous prime is 1405404283. The next prime is 1405404311. The reversal of 1405404304 is 4034045041.

It can be written as a sum of positive squares in 2 ways, for example, as 1260250000 + 145154304 = 35500^2 + 12048^2 .

It is a super-2 number, since 2×1405404304² = 3950322515403448832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219787 + ... + 226090.

Almost surely, 2^1405404304 is an apocalyptic number.

It is an amenable number.

1405404304 is a deficient number, since it is larger than the sum of its proper divisors (1331394860).

1405404304 is a wasteful number, since it uses less digits than its factorization.

1405404304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446082 (or 446076 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1405404304 is about 37488.7223575304. The cubic root of 1405404304 is about 1120.1265545770.

Adding to 1405404304 its reverse (4034045041), we get a palindrome (5439449345).

The spelling of 1405404304 in words is "one billion, four hundred five million, four hundred four thousand, three hundred four".