1397207 has 4 divisors (see below), whose sum is σ = 1596816. Its totient is φ = 1197600.

The previous prime is 1397189. The next prime is 1397219. The reversal of 1397207 is 7027931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1397207 - 2¹⁰ = 1396183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1397207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99794 + ... + 99807.

It is an arithmetic number, because the mean of its divisors is an integer number (399204).

2^1397207 is an apocalyptic number.

1397207 is a deficient number, since it is larger than the sum of its proper divisors (199609).

1397207 is an equidigital number, since it uses as much as digits as its factorization.

1397207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199608.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 1397207 is about 1182.0351094616. The cubic root of 1397207 is about 111.7944518674.

The spelling of 1397207 in words is "one million, three hundred ninety-seven thousand, two hundred seven".