79349489938 has 4 divisors (see below), whose sum is σ = 119024234910. Its totient is φ = 39674744968.

The previous prime is 79349489897. The next prime is 79349489939. The reversal of 79349489938 is 83998494397.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83998494397 = 79333 ⋅1058809.

It can be written as a sum of positive squares in only one way, i.e., 69821192169 + 9528297769 = 264237^2 + 97613^2 .

It is not an unprimeable number, because it can be changed into a prime (79349489939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19837372483 + ... + 19837372486.

Almost surely, 2^79349489938 is an apocalyptic number.

79349489938 is a deficient number, since it is larger than the sum of its proper divisors (39674744972).

79349489938 is a wasteful number, since it uses less digits than its factorization.

79349489938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39674744971.

The product of its digits is 423263232, while the sum is 73.

The spelling of 79349489938 in words is "seventy-nine billion, three hundred forty-nine million, four hundred eighty-nine thousand, nine hundred thirty-eight".