123489697 has 4 divisors (see below), whose sum is σ = 124622740. Its totient is φ = 122356656.

The previous prime is 123489673. The next prime is 123489701. The reversal of 123489697 is 796984321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29767936 + 93721761 = 5456^2 + 9681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123489697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123489697.

It is not an unprimeable number, because it can be changed into a prime (123489097) 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, 566358 + ... + 566575.

It is an arithmetic number, because the mean of its divisors is an integer number (31155685).

Almost surely, 2^123489697 is an apocalyptic number.

It is an amenable number.

123489697 is a deficient number, since it is larger than the sum of its proper divisors (1133043).

123489697 is a wasteful number, since it uses less digits than its factorization.

123489697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133042.

The product of its digits is 653184, while the sum is 49.

The square root of 123489697 is about 11112.5918218929. The cubic root of 123489697 is about 497.9780975083.

The spelling of 123489697 in words is "one hundred twenty-three million, four hundred eighty-nine thousand, six hundred ninety-seven".