1397941 has 4 divisors (see below), whose sum is σ = 1411884. Its totient is φ = 1384000.

The previous prime is 1397939. The next prime is 1397951. The reversal of 1397941 is 1497931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1497931 = 101 ⋅14831.

It can be written as a sum of positive squares in 2 ways, for example, as 970225 + 427716 = 985^2 + 654^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397941 - 2¹ = 1397939 is a prime.

It is a Duffinian number.

1397941 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1397897 and 1397906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397951) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6820 + ... + 7021.

It is an arithmetic number, because the mean of its divisors is an integer number (352971).

2^1397941 is an apocalyptic number.

It is an amenable number.

1397941 is a deficient number, since it is larger than the sum of its proper divisors (13943).

1397941 is a wasteful number, since it uses less digits than its factorization.

1397941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13942.

The product of its digits is 6804, while the sum is 34.

The square root of 1397941 is about 1182.3455501671. The cubic root of 1397941 is about 111.8140249067.

The spelling of 1397941 in words is "one million, three hundred ninety-seven thousand, nine hundred forty-one".