1396992 has 72 divisors (see below), whose sum is σ = 3973536. Its totient is φ = 434176.

The previous prime is 1396991. The next prime is 1396999. The reversal of 1396992 is 2996931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1396992.

It is not an unprimeable number, because it can be changed into a prime (1396991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13003 + ... + 13109.

It is an arithmetic number, because the mean of its divisors is an integer number (55188).

2^1396992 is an apocalyptic number.

1396992 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 1396992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1986768).

1396992 is an abundant number, since it is smaller than the sum of its proper divisors (2576544).

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

1396992 is a wasteful number, since it uses less digits than its factorization.

1396992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 129 counting only the distinct ones).

The product of its digits is 26244, while the sum is 39.

The square root of 1396992 is about 1181.9441611176. The cubic root of 1396992 is about 111.7887173222.

The spelling of 1396992 in words is "one million, three hundred ninety-six thousand, nine hundred ninety-two".