1392191 has 4 divisors (see below), whose sum is σ = 1398552. Its totient is φ = 1385832.

The previous prime is 1392163. The next prime is 1392197. The reversal of 1392191 is 1912931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1912931 = 137 ⋅13963.

It is a cyclic number.

It is not a de Polignac number, because 1392191 - 2¹⁴ = 1375807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1392191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392197) 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, 2840 + ... + 3293.

It is an arithmetic number, because the mean of its divisors is an integer number (349638).

2^1392191 is an apocalyptic number.

1392191 is a deficient number, since it is larger than the sum of its proper divisors (6361).

1392191 is an equidigital number, since it uses as much as digits as its factorization.

1392191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360.

The product of its digits is 486, while the sum is 26.

The square root of 1392191 is about 1179.9114373545. The cubic root of 1392191 is about 111.6605100440.

The spelling of 1392191 in words is "one million, three hundred ninety-two thousand, one hundred ninety-one".