1397424 has 40 divisors (see below), whose sum is σ = 4126720. Its totient is φ = 399168.

The previous prime is 1397359. The next prime is 1397437. The reversal of 1397424 is 4247931.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1397391 and 1397400.

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, 1744 + ... + 2415.

It is an arithmetic number, because the mean of its divisors is an integer number (103168).

2^1397424 is an apocalyptic number.

1397424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1397424 is an abundant number, since it is smaller than the sum of its proper divisors (2729296).

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

1397424 is a wasteful number, since it uses less digits than its factorization.

1397424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177 (or 4171 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 1397424 is about 1182.1268967416. The cubic root of 1397424 is about 111.8002391607.

The spelling of 1397424 in words is "one million, three hundred ninety-seven thousand, four hundred twenty-four".