1399080 has 64 divisors (see below), whose sum is σ = 4276800. Its totient is φ = 366080.

The previous prime is 1399063. The next prime is 1399109. The reversal of 1399080 is 809931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 10615 + ... + 10745.

It is an arithmetic number, because the mean of its divisors is an integer number (66825).

2^1399080 is an apocalyptic number.

1399080 is a gapful number since it is divisible by the number (10) 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 1399080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2138400).

1399080 is an abundant number, since it is smaller than the sum of its proper divisors (2877720).

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

1399080 is a wasteful number, since it uses less digits than its factorization.

1399080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1399080 is about 1182.8271217722. The cubic root of 1399080 is about 111.8443842236.

The spelling of 1399080 in words is "one million, three hundred ninety-nine thousand, eighty".