1399248 has 80 divisors (see below), whose sum is σ = 4166400. Its totient is φ = 449280.

The previous prime is 1399231. The next prime is 1399261. The reversal of 1399248 is 8429931.

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 15 ways as a sum of consecutive naturals, for example, 17673 + ... + 17751.

It is an arithmetic number, because the mean of its divisors is an integer number (52080).

2^1399248 is an apocalyptic number.

1399248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1399248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2083200).

1399248 is an abundant number, since it is smaller than the sum of its proper divisors (2767152).

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

1399248 is a wasteful number, since it uses less digits than its factorization.

1399248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 125 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1399248 is about 1182.8981359356. The cubic root of 1399248 is about 111.8488607616.

The spelling of 1399248 in words is "one million, three hundred ninety-nine thousand, two hundred forty-eight".