1392279 has 16 divisors (see below), whose sum is σ = 2139648. Its totient is φ = 788832.

The previous prime is 1392277. The next prime is 1392311. The reversal of 1392279 is 9722931.

It is not a de Polignac number, because 1392279 - 2¹ = 1392277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3309 + ... + 3705.

It is an arithmetic number, because the mean of its divisors is an integer number (133728).

2^1392279 is an apocalyptic number.

1392279 is a deficient number, since it is larger than the sum of its proper divisors (747369).

1392279 is a wasteful number, since it uses less digits than its factorization.

1392279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574.

The product of its digits is 6804, while the sum is 33.

The square root of 1392279 is about 1179.9487276996. The cubic root of 1392279 is about 111.6628626708.

The spelling of 1392279 in words is "one million, three hundred ninety-two thousand, two hundred seventy-nine".