1383446440 has 24 divisors (see below), whose sum is σ = 3113283870. Its totient is φ = 553284480.

The previous prime is 1383446419. The next prime is 1383446483. The reversal of 1383446440 is 446443831.

It can be written as a sum of positive squares in 3 ways, for example, as 1370036196 + 13410244 = 37014^2 + 3662^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1383446440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 232300 + ... + 238180.

Almost surely, 2^1383446440 is an apocalyptic number.

1383446440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1383446440 is an abundant number, since it is smaller than the sum of its proper divisors (1729837430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1383446440 is an frugal number, since it uses more digits than its factorization.

1383446440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11773 (or 5888 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

The square root of 1383446440 is about 37194.7098389005. The cubic root of 1383446440 is about 1114.2623339072.

The spelling of 1383446440 in words is "one billion, three hundred eighty-three million, four hundred forty-six thousand, four hundred forty".