1396864 has 32 divisors (see below), whose sum is σ = 3182400. Its totient is φ = 598272.

The previous prime is 1396849. The next prime is 1396867. The reversal of 1396864 is 4686931.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1396867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117 + ... + 1675.

It is an arithmetic number, because the mean of its divisors is an integer number (99450).

2^1396864 is an apocalyptic number.

1396864 is a gapful number since it is divisible by the number (14) 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 1396864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1591200).

1396864 is an abundant number, since it is smaller than the sum of its proper divisors (1785536).

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

1396864 is an equidigital number, since it uses as much as digits as its factorization.

1396864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580 (or 1568 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 1396864 is about 1181.8900118031. The cubic root of 1396864 is about 111.7853029879.

The spelling of 1396864 in words is "one million, three hundred ninety-six thousand, eight hundred sixty-four".