1398384 has 100 divisors (see below), whose sum is σ = 4411176. Its totient is φ = 425088.

The previous prime is 1398367. The next prime is 1398401. The reversal of 1398384 is 4838931.

It is an interprime number because it is at equal distance from previous prime (1398367) and next prime (1398401).

It is a super-2 number, since 2×1398384² = 3910955622912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16807 + ... + 16889.

2^1398384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1398384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2205588).

1398384 is an abundant number, since it is smaller than the sum of its proper divisors (3012792).

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

1398384 is a wasteful number, since it uses less digits than its factorization.

1398384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 101 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1398384 is about 1182.5328748073. The cubic root of 1398384 is about 111.8258347474.

The spelling of 1398384 in words is "one million, three hundred ninety-eight thousand, three hundred eighty-four".