1374391 has 4 divisors (see below), whose sum is σ = 1396984. Its totient is φ = 1351800.

The previous prime is 1374379. The next prime is 1374407. The reversal of 1374391 is 1934731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1934731 = 311 ⋅6221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1374391 is a prime.

It is a Duffinian number.

1374391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1374301) 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, 11205 + ... + 11326.

It is an arithmetic number, because the mean of its divisors is an integer number (349246).

2^1374391 is an apocalyptic number.

1374391 is a deficient number, since it is larger than the sum of its proper divisors (22593).

1374391 is an equidigital number, since it uses as much as digits as its factorization.

1374391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22592.

The product of its digits is 2268, while the sum is 28.

The square root of 1374391 is about 1172.3442327235. The cubic root of 1374391 is about 111.1825850875.

The spelling of 1374391 in words is "one million, three hundred seventy-four thousand, three hundred ninety-one".