1398830444 has 48 divisors (see below), whose sum is σ = 2709624960. Its totient is φ = 626567040.

The previous prime is 1398830443. The next prime is 1398830471. The reversal of 1398830444 is 4440388931.

It is a super-2 number, since 2×1398830444² = 3913453222122474272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 1398830395 and 1398830404.

It is not an unprimeable number, because it can be changed into a prime (1398830441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2047727 + ... + 2048409.

It is an arithmetic number, because the mean of its divisors is an integer number (56450520).

Almost surely, 2^1398830444 is an apocalyptic number.

It is an amenable number.

1398830444 is a deficient number, since it is larger than the sum of its proper divisors (1310794516).

1398830444 is a wasteful number, since it uses less digits than its factorization.

1398830444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 1398830444 is about 37400.9417528490. The cubic root of 1398830444 is about 1118.3773387791.

The spelling of 1398830444 in words is "one billion, three hundred ninety-eight million, eight hundred thirty thousand, four hundred forty-four".