1391373 has 12 divisors (see below), whose sum is σ = 2075008. Its totient is φ = 897480.

The previous prime is 1391363. The next prime is 1391381. The reversal of 1391373 is 3731931.

It is not a de Polignac number, because 1391373 - 2¹⁸ = 1129229 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 (1391323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2215 + ... + 2772.

2^1391373 is an apocalyptic number.

It is an amenable number.

1391373 is a deficient number, since it is larger than the sum of its proper divisors (683635).

1391373 is a wasteful number, since it uses less digits than its factorization.

1391373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024 (or 5021 counting only the distinct ones).

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

The square root of 1391373 is about 1179.5647502363. The cubic root of 1391373 is about 111.6386365625.

It can be divided in two parts, 1391 and 373, that added together give a square (1764 = 42²).

The spelling of 1391373 in words is "one million, three hundred ninety-one thousand, three hundred seventy-three".