1339679 has 4 divisors (see below), whose sum is σ = 1461480. Its totient is φ = 1217880.

The previous prime is 1339673. The next prime is 1339687. The reversal of 1339679 is 9769331.

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 1339679 - 2²⁰ = 291103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339673) 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 3 ways as a sum of consecutive naturals, for example, 60884 + ... + 60905.

It is an arithmetic number, because the mean of its divisors is an integer number (365370).

2^1339679 is an apocalyptic number.

1339679 is a deficient number, since it is larger than the sum of its proper divisors (121801).

1339679 is a wasteful number, since it uses less digits than its factorization.

1339679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121800.

The product of its digits is 30618, while the sum is 38.

The square root of 1339679 is about 1157.4450310922. The cubic root of 1339679 is about 110.2385731066.

The spelling of 1339679 in words is "one million, three hundred thirty-nine thousand, six hundred seventy-nine".