1379817 has 6 divisors (see below), whose sum is σ = 1993082. Its totient is φ = 919872.

The previous prime is 1379813. The next prime is 1379821. The reversal of 1379817 is 7189731.

It is an interprime number because it is at equal distance from previous prime (1379813) and next prime (1379821).

It can be written as a sum of positive squares in only one way, i.e., 826281 + 553536 = 909^2 + 744^2 .

It is not a de Polignac number, because 1379817 - 2² = 1379813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1379813) 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, 76648 + ... + 76665.

2^1379817 is an apocalyptic number.

It is an amenable number.

1379817 is a deficient number, since it is larger than the sum of its proper divisors (613265).

1379817 is a wasteful number, since it uses less digits than its factorization.

1379817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153319 (or 153316 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 1379817 is about 1174.6561198921. The cubic root of 1379817 is about 111.3287066655.

The spelling of 1379817 in words is "one million, three hundred seventy-nine thousand, eight hundred seventeen".