123486109 has 4 divisors (see below), whose sum is σ = 123544960. Its totient is φ = 123427260.

The previous prime is 123486091. The next prime is 123486119. The reversal of 123486109 is 901684321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123486109 - 2¹¹ = 123484061 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 (123486119) 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, 26157 + ... + 30514.

It is an arithmetic number, because the mean of its divisors is an integer number (30886240).

Almost surely, 2^123486109 is an apocalyptic number.

It is an amenable number.

123486109 is a deficient number, since it is larger than the sum of its proper divisors (58851).

123486109 is an equidigital number, since it uses as much as digits as its factorization.

123486109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58850.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 123486109 is about 11112.4303822341. The cubic root of 123486109 is about 497.9732745345.

The spelling of 123486109 in words is "one hundred twenty-three million, four hundred eighty-six thousand, one hundred nine".