1398840708 has 24 divisors (see below), whose sum is σ = 3296280960. Its totient is φ = 461663200.

The previous prime is 1398840661. The next prime is 1398840719. The reversal of 1398840708 is 8070488931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575868 + ... + 578291.

It is an arithmetic number, because the mean of its divisors is an integer number (137345040).

Almost surely, 2^1398840708 is an apocalyptic number.

It is an amenable number.

1398840708 is an abundant number, since it is smaller than the sum of its proper divisors (1897440252).

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

1398840708 is a wasteful number, since it uses less digits than its factorization.

1398840708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154267 (or 1154265 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 1398840708 is about 37401.0789683934. The cubic root of 1398840708 is about 1118.3800741588.

The spelling of 1398840708 in words is "one billion, three hundred ninety-eight million, eight hundred forty thousand, seven hundred eight".