1404640330 has 16 divisors (see below), whose sum is σ = 2553387624. Its totient is φ = 556292800.

The previous prime is 1404640319. The next prime is 1404640343. The reversal of 1404640330 is 330464041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1225910169 + 178730161 = 35013^2 + 13369^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1404640295 and 1404640304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694357 + ... + 696376.

Almost surely, 2^1404640330 is an apocalyptic number.

1404640330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1404640330 is a deficient number, since it is larger than the sum of its proper divisors (1148747294).

1404640330 is a wasteful number, since it uses less digits than its factorization.

1404640330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390841.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1404640330 is about 37478.5315880972. The cubic root of 1404640330 is about 1119.9235518611.

The spelling of 1404640330 in words is "one billion, four hundred four million, six hundred forty thousand, three hundred thirty".