1398389844 has 48 divisors (see below), whose sum is σ = 3304094976. Its totient is φ = 460272000.

The previous prime is 1398389833. The next prime is 1398389851. The reversal of 1398389844 is 4489838931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521034 + ... + 523710.

It is an arithmetic number, because the mean of its divisors is an integer number (68835312).

Almost surely, 2^1398389844 is an apocalyptic number.

It is an amenable number.

1398389844 is an abundant number, since it is smaller than the sum of its proper divisors (1905705132).

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

1398389844 is a wasteful number, since it uses less digits than its factorization.

1398389844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216 (or 3214 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 57.

The square root of 1398389844 is about 37395.0510629415. The cubic root of 1398389844 is about 1118.2599052468.

The spelling of 1398389844 in words is "one billion, three hundred ninety-eight million, three hundred eighty-nine thousand, eight hundred forty-four".