79026767689 has 3 divisors (see below), whose sum is σ = 79027048807. Its totient is φ = 79026486572.

The previous prime is 79026767671. The next prime is 79026767737. The reversal of 79026767689 is 98676762097.

The square root of 79026767689 is 281117.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98676762097 = 124493 ⋅792629.

It can be written as a sum of positive squares in only one way, i.e., 2357588025 + 76669179664 = 48555^2 + 276892^2 .

It is not a de Polignac number, because 79026767689 - 2¹⁷ = 79026636617 is a prime.

It is a super-2 number, since 2×79026767689² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79026767629) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 140559 + ... + 421675.

Almost surely, 2^79026767689 is an apocalyptic number.

79026767689 is the 281117-th square number.

79026767689 is the 140559-th centered octagonal number.

It is an amenable number.

79026767689 is a deficient number, since it is larger than the sum of its proper divisors (281118).

79026767689 is an frugal number, since it uses more digits than its factorization.

79026767689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562234 (or 281117 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 67.

The spelling of 79026767689 in words is "seventy-nine billion, twenty-six million, seven hundred sixty-seven thousand, six hundred eighty-nine".