1397946 has 32 divisors (see below), whose sum is σ = 3110400. Its totient is φ = 415280.

The previous prime is 1397939. The next prime is 1397951. The reversal of 1397946 is 6497931.

It is a nialpdrome in base 11.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3715 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (97200).

2^1397946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1397946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555200).

1397946 is an abundant number, since it is smaller than the sum of its proper divisors (1712454).

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

1397946 is a wasteful number, since it uses less digits than its factorization.

1397946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434.

The product of its digits is 40824, while the sum is 39.

The square root of 1397946 is about 1182.3476646063. The cubic root of 1397946 is about 111.8141582145.

The spelling of 1397946 in words is "one million, three hundred ninety-seven thousand, nine hundred forty-six".