1373391 has 6 divisors (see below), whose sum is σ = 1983800. Its totient is φ = 915588.

The previous prime is 1373381. The next prime is 1373417. The reversal of 1373391 is 1933731.

It is not a de Polignac number, because 1373391 - 2⁹ = 1372879 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 (1373321) 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 5 ways as a sum of consecutive naturals, for example, 76291 + ... + 76308.

2^1373391 is an apocalyptic number.

1373391 is a deficient number, since it is larger than the sum of its proper divisors (610409).

1373391 is a wasteful number, since it uses less digits than its factorization.

1373391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152605 (or 152602 counting only the distinct ones).

The product of its digits is 1701, while the sum is 27.

The square root of 1373391 is about 1171.9176592235. The cubic root of 1373391 is about 111.1556132477.

It can be divided in two parts, 13733 and 91, that added together give a cube (13824 = 24³).

The spelling of 1373391 in words is "one million, three hundred seventy-three thousand, three hundred ninety-one".