123548869 has 4 divisors (see below), whose sum is σ = 123622380. Its totient is φ = 123475360.

The previous prime is 123548861. The next prime is 123548879. The reversal of 123548869 is 968845321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 968845321 = 19 ⋅50991859.

It can be written as a sum of positive squares in 2 ways, for example, as 70812225 + 52736644 = 8415^2 + 7262^2 .

It is a cyclic number.

It is not a de Polignac number, because 123548869 - 2³ = 123548861 is a prime.

It is a super-2 number, since 2×123548869² = 30528646062358322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123548861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34174 + ... + 37615.

It is an arithmetic number, because the mean of its divisors is an integer number (30905595).

Almost surely, 2^123548869 is an apocalyptic number.

It is an amenable number.

123548869 is a deficient number, since it is larger than the sum of its proper divisors (73511).

123548869 is an equidigital number, since it uses as much as digits as its factorization.

123548869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73510.

The product of its digits is 414720, while the sum is 46.

The square root of 123548869 is about 11115.2538882385. The cubic root of 123548869 is about 498.0576227791.

The spelling of 123548869 in words is "one hundred twenty-three million, five hundred forty-eight thousand, eight hundred sixty-nine".