1392397 has 4 divisors (see below), whose sum is σ = 1452960. Its totient is φ = 1331836.

The previous prime is 1392379. The next prime is 1392407. The reversal of 1392397 is 7932931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1392397 - 2⁷ = 1392269 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 (1392367) 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, 30247 + ... + 30292.

It is an arithmetic number, because the mean of its divisors is an integer number (363240).

2^1392397 is an apocalyptic number.

It is an amenable number.

1392397 is a deficient number, since it is larger than the sum of its proper divisors (60563).

1392397 is an equidigital number, since it uses as much as digits as its factorization.

1392397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60562.

The product of its digits is 10206, while the sum is 34.

The square root of 1392397 is about 1179.9987288129. The cubic root of 1392397 is about 111.6660171740. Note that the first 3 decimals are identical.

It can be divided in two parts, 13923 and 97, that multiplied together give a palindrome (1350531).

The spelling of 1392397 in words is "one million, three hundred ninety-two thousand, three hundred ninety-seven".