1339897 has 4 divisors (see below), whose sum is σ = 1442980. Its totient is φ = 1236816.

The previous prime is 1339873. The next prime is 1339901. The reversal of 1339897 is 7989331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 674041 + 665856 = 821^2 + 816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1339897 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1339817) 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, 51522 + ... + 51547.

It is an arithmetic number, because the mean of its divisors is an integer number (360745).

2^1339897 is an apocalyptic number.

It is an amenable number.

1339897 is a deficient number, since it is larger than the sum of its proper divisors (103083).

1339897 is a wasteful number, since it uses less digits than its factorization.

1339897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103082.

The product of its digits is 40824, while the sum is 40.

The square root of 1339897 is about 1157.5392002001. The cubic root of 1339897 is about 110.2445523264.

The spelling of 1339897 in words is "one million, three hundred thirty-nine thousand, eight hundred ninety-seven".