1379247 has 4 divisors (see below), whose sum is σ = 1839000. Its totient is φ = 919496.

The previous prime is 1379239. The next prime is 1379251. The reversal of 1379247 is 7429731.

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 1379247 - 2³ = 1379239 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379207) 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, 229872 + ... + 229877.

It is an arithmetic number, because the mean of its divisors is an integer number (459750).

2^1379247 is an apocalyptic number.

1379247 is a deficient number, since it is larger than the sum of its proper divisors (459753).

1379247 is an equidigital number, since it uses as much as digits as its factorization.

1379247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459752.

The product of its digits is 10584, while the sum is 33.

The square root of 1379247 is about 1174.4134706312. The cubic root of 1379247 is about 111.3133746558.

Adding to 1379247 its product of digits (10584), we get a palindrome (1389831).

The spelling of 1379247 in words is "one million, three hundred seventy-nine thousand, two hundred forty-seven".