1397465 has 8 divisors (see below), whose sum is σ = 1684680. Its totient is φ = 1112832.

The previous prime is 1397447. The next prime is 1397477. The reversal of 1397465 is 5647931.

It can be written as a sum of positive squares in 4 ways, for example, as 2704 + 1394761 = 52^2 + 1181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1397465 - 2¹⁶ = 1331929 is a prime.

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 881 + ... + 1889.

It is an arithmetic number, because the mean of its divisors is an integer number (210585).

2^1397465 is an apocalyptic number.

It is an amenable number.

1397465 is a deficient number, since it is larger than the sum of its proper divisors (287215).

1397465 is a wasteful number, since it uses less digits than its factorization.

1397465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291.

The product of its digits is 22680, while the sum is 35.

The square root of 1397465 is about 1182.1442382383. The cubic root of 1397465 is about 111.8013325451.

The spelling of 1397465 in words is "one million, three hundred ninety-seven thousand, four hundred sixty-five".