1392679 has 2 divisors, whose sum is σ = 1392680. Its totient is φ = 1392678.

The previous prime is 1392649. The next prime is 1392697. The reversal of 1392679 is 9762931.

Together with next prime (1392697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1392679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1392619) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696339 + 696340.

It is an arithmetic number, because the mean of its divisors is an integer number (696340).

2^1392679 is an apocalyptic number.

1392679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392679 is an equidigital number, since it uses as much as digits as its factorization.

1392679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 1392679 is about 1180.1182144175. The cubic root of 1392679 is about 111.6735551801.

The spelling of 1392679 in words is "one million, three hundred ninety-two thousand, six hundred seventy-nine".