1399752 has 24 divisors (see below), whose sum is σ = 3791190. Its totient is φ = 466560.

The previous prime is 1399751. The next prime is 1399777. The reversal of 1399752 is 2579931.

It can be written as a sum of positive squares in only one way, i.e., 1313316 + 86436 = 1146^2 + 294^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is not an unprimeable number, because it can be changed into a prime (1399751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9649 + ... + 9792.

2^1399752 is an apocalyptic number.

1399752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1399752 is an abundant number, since it is smaller than the sum of its proper divisors (2391438).

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

1399752 is a wasteful number, since it uses less digits than its factorization.

1399752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19453 (or 19446 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 1399752 is about 1183.1111528508. Note that the first 4 decimals coincide. The cubic root of 1399752 is about 111.8622882262.

The spelling of 1399752 in words is "one million, three hundred ninety-nine thousand, seven hundred fifty-two".