123456797 has 4 divisors (see below), whose sum is σ = 125148060. Its totient is φ = 121765536.

The previous prime is 123456791. The next prime is 123456803. The reversal of 123456797 is 797654321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 797654321 = 919 ⋅867959.

It is an interprime number because it is at equal distance from previous prime (123456791) and next prime (123456803).

It can be written as a sum of positive squares in 2 ways, for example, as 34739236 + 88717561 = 5894^2 + 9419^2 .

It is a cyclic number.

It is not a de Polignac number, because 123456797 - 2¹⁴ = 123440413 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 (123456791) 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, 845522 + ... + 845667.

It is an arithmetic number, because the mean of its divisors is an integer number (31287015).

Almost surely, 2^123456797 is an apocalyptic number.

It is an amenable number.

123456797 is a deficient number, since it is larger than the sum of its proper divisors (1691263).

123456797 is an equidigital number, since it uses as much as digits as its factorization.

123456797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691262.

The product of its digits is 317520, while the sum is 44.

The square root of 123456797 is about 11111.1114205556. Note that the first 3 decimals coincide. The cubic root of 123456797 is about 497.9338699735.

The spelling of 123456797 in words is "one hundred twenty-three million, four hundred fifty-six thousand, seven hundred ninety-seven".