1392971 has 4 divisors (see below), whose sum is σ = 1396992. Its totient is φ = 1388952.

The previous prime is 1392959. The next prime is 1392977. The reversal of 1392971 is 1792931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1792931 = 7 ⋅256133.

It is a cyclic number.

It is not a de Polignac number, because 1392971 - 2¹⁸ = 1130827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1392977) 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, 1436 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (349248).

2^1392971 is an apocalyptic number.

1392971 is a deficient number, since it is larger than the sum of its proper divisors (4021).

1392971 is an equidigital number, since it uses as much as digits as its factorization.

1392971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020.

The product of its digits is 3402, while the sum is 32.

The square root of 1392971 is about 1180.2419243528. The cubic root of 1392971 is about 111.6813594191.

The spelling of 1392971 in words is "one million, three hundred ninety-two thousand, nine hundred seventy-one".