1398324388 has 12 divisors (see below), whose sum is σ = 2449077120. Its totient is φ = 698588072.

The previous prime is 1398324383. The next prime is 1398324397. The reversal of 1398324388 is 8834238931.

It is a super-2 number, since 2×1398324388² = 3910622188151149088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1398324383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138028 + ... + 147811.

It is an arithmetic number, because the mean of its divisors is an integer number (204089760).

Almost surely, 2^1398324388 is an apocalyptic number.

It is an amenable number.

1398324388 is a deficient number, since it is larger than the sum of its proper divisors (1050752732).

1398324388 is a wasteful number, since it uses less digits than its factorization.

1398324388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287066 (or 287064 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The square root of 1398324388 is about 37394.1758566759. The cubic root of 1398324388 is about 1118.2424570932.

The spelling of 1398324388 in words is "one billion, three hundred ninety-eight million, three hundred twenty-four thousand, three hundred eighty-eight".