1339992 has 48 divisors (see below), whose sum is σ = 3734640. Its totient is φ = 433728.

The previous prime is 1339973. The next prime is 1339993. The reversal of 1339992 is 2999331.

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 not an unprimeable number, because it can be changed into a prime (1339993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2413 + ... + 2915.

It is an arithmetic number, because the mean of its divisors is an integer number (77805).

2^1339992 is an apocalyptic number.

1339992 is a gapful number since it is divisible by the number (12) 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 1339992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867320).

1339992 is an abundant number, since it is smaller than the sum of its proper divisors (2394648).

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

1339992 is a wasteful number, since it uses less digits than its factorization.

1339992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 545 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 1339992 is about 1157.5802348002. The cubic root of 1339992 is about 110.2471577468.

The spelling of 1339992 in words is "one million, three hundred thirty-nine thousand, nine hundred ninety-two".