1392447 has 16 divisors (see below), whose sum is σ = 2158592. Its totient is φ = 781920.

The previous prime is 1392431. The next prime is 1392449. The reversal of 1392447 is 7442931.

It is a happy number.

It is not a de Polignac number, because 1392447 - 2⁴ = 1392431 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 (1392449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738 + ... + 1824.

It is an arithmetic number, because the mean of its divisors is an integer number (134912).

2^1392447 is an apocalyptic number.

1392447 is a deficient number, since it is larger than the sum of its proper divisors (766145).

1392447 is a wasteful number, since it uses less digits than its factorization.

1392447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158.

The product of its digits is 6048, while the sum is 30.

The square root of 1392447 is about 1180.0199150862. The cubic root of 1392447 is about 111.6673537741.

The spelling of 1392447 in words is "one million, three hundred ninety-two thousand, four hundred forty-seven".