1406791 has 4 divisors (see below), whose sum is σ = 1421392. Its totient is φ = 1392192.

The previous prime is 1406789. The next prime is 1406803. The reversal of 1406791 is 1976041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1976041 = 229 ⋅8629.

It is a cyclic number.

It is not a de Polignac number, because 1406791 - 2¹ = 1406789 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 (1406701) 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 3 ways as a sum of consecutive naturals, for example, 7155 + ... + 7348.

It is an arithmetic number, because the mean of its divisors is an integer number (355348).

2^1406791 is an apocalyptic number.

1406791 is a deficient number, since it is larger than the sum of its proper divisors (14601).

1406791 is an equidigital number, since it uses as much as digits as its factorization.

1406791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14600.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1406791 is about 1186.0822062572. The cubic root of 1406791 is about 112.0494838736.

It can be divided in two parts, 1406 and 791, that added together give a cube (2197 = 13³).

The spelling of 1406791 in words is "one million, four hundred six thousand, seven hundred ninety-one".