1397811 has 16 divisors (see below), whose sum is σ = 1987200. Its totient is φ = 871488.

The previous prime is 1397783. The next prime is 1397833. The reversal of 1397811 is 1187931.

It is not a de Polignac number, because 1397811 - 2¹⁴ = 1381427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1397861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7720 + ... + 7898.

It is an arithmetic number, because the mean of its divisors is an integer number (124200).

2^1397811 is an apocalyptic number.

1397811 is a deficient number, since it is larger than the sum of its proper divisors (589389).

1397811 is a wasteful number, since it uses less digits than its factorization.

1397811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338.

The product of its digits is 1512, while the sum is 30.

The square root of 1397811 is about 1182.2905734209. The cubic root of 1397811 is about 111.8105587915.

The spelling of 1397811 in words is "one million, three hundred ninety-seven thousand, eight hundred eleven".