1373997 has 8 divisors (see below), whose sum is σ = 1911744. Its totient is φ = 876128.

The previous prime is 1373989. The next prime is 1374007. The reversal of 1373997 is 7993731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1373997 - 2³ = 1373989 is a prime.

It is a d-powerful number, because it can be written as 1 + 3⁷ + 7⁵ + 3¹² + 9 + 9 + 7⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373497) 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 7 ways as a sum of consecutive naturals, for example, 9888 + ... + 10025.

It is an arithmetic number, because the mean of its divisors is an integer number (238968).

2^1373997 is an apocalyptic number.

It is an amenable number.

1373997 is a deficient number, since it is larger than the sum of its proper divisors (537747).

1373997 is a wasteful number, since it uses less digits than its factorization.

1373997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19939.

The product of its digits is 35721, while the sum is 39.

The square root of 1373997 is about 1172.1761812970. The cubic root of 1373997 is about 111.1719597450.

The spelling of 1373997 in words is "one million, three hundred seventy-three thousand, nine hundred ninety-seven".