1399712 has 48 divisors (see below), whose sum is σ = 3048192. Its totient is φ = 629760.

The previous prime is 1399709. The next prime is 1399721. The reversal of 1399712 is 2179931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16823 + ... + 16905.

It is an arithmetic number, because the mean of its divisors is an integer number (63504).

2^1399712 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 1399712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1524096).

1399712 is an abundant number, since it is smaller than the sum of its proper divisors (1648480).

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

1399712 is a wasteful number, since it uses less digits than its factorization.

1399712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 133 counting only the distinct ones).

The product of its digits is 3402, while the sum is 32.

The square root of 1399712 is about 1183.0942481476. The cubic root of 1399712 is about 111.8612226722.

The spelling of 1399712 in words is "one million, three hundred ninety-nine thousand, seven hundred twelve".