1383239808 has 64 divisors (see below), whose sum is σ = 4082488800. Its totient is φ = 461078784.

The previous prime is 1383239801. The next prime is 1383239827. The reversal of 1383239808 is 8089323831.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (1383239801) 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, 196666 + ... + 203577.

Almost surely, 2^1383239808 is an apocalyptic number.

1383239808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1383239808 is an abundant number, since it is smaller than the sum of its proper divisors (2699248992).

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

1383239808 is an equidigital number, since it uses as much as digits as its factorization.

1383239808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400266 (or 400248 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1383239808 is about 37191.9320283311. The cubic root of 1383239808 is about 1114.2068556196.

The spelling of 1383239808 in words is "one billion, three hundred eighty-three million, two hundred thirty-nine thousand, eight hundred eight".