1373197939 has 4 divisors (see below), whose sum is σ = 1374859224. Its totient is φ = 1371536656.

The previous prime is 1373197913. The next prime is 1373197951. The reversal of 1373197939 is 9397913731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9397913731 = 53 ⋅177319127.

It is a cyclic number.

It is not a de Polignac number, because 1373197939 - 2⁵ = 1373197907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1373197739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829402 + ... + 831055.

It is an arithmetic number, because the mean of its divisors is an integer number (343714806).

Almost surely, 2^1373197939 is an apocalyptic number.

1373197939 is a deficient number, since it is larger than the sum of its proper divisors (1661285).

1373197939 is an equidigital number, since it uses as much as digits as its factorization.

1373197939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661284.

The product of its digits is 964467, while the sum is 52.

The square root of 1373197939 is about 37056.6854831891. The cubic root of 1373197939 is about 1111.5040452968.

The spelling of 1373197939 in words is "one billion, three hundred seventy-three million, one hundred ninety-seven thousand, nine hundred thirty-nine".