1396971 has 6 divisors (see below), whose sum is σ = 2017860. Its totient is φ = 931308.

The previous prime is 1396963. The next prime is 1396979. The reversal of 1396971 is 1796931.

It is an interprime number because it is at equal distance from previous prime (1396963) and next prime (1396979).

It is not a de Polignac number, because 1396971 - 2³ = 1396963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1396979) 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 5 ways as a sum of consecutive naturals, for example, 77601 + ... + 77618.

It is an arithmetic number, because the mean of its divisors is an integer number (336310).

2^1396971 is an apocalyptic number.

1396971 is a deficient number, since it is larger than the sum of its proper divisors (620889).

1396971 is a wasteful number, since it uses less digits than its factorization.

1396971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155225 (or 155222 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 1396971 is about 1181.9352774158. The cubic root of 1396971 is about 111.7881571722.

The spelling of 1396971 in words is "one million, three hundred ninety-six thousand, nine hundred seventy-one".