123693889 has 8 divisors (see below), whose sum is σ = 135535968. Its totient is φ = 111951360.

The previous prime is 123693883. The next prime is 123693907. The reversal of 123693889 is 988396321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123693889 - 2³ = 123693881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123693881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22272 + ... + 27265.

It is an arithmetic number, because the mean of its divisors is an integer number (16941996).

Almost surely, 2^123693889 is an apocalyptic number.

It is an amenable number.

123693889 is a deficient number, since it is larger than the sum of its proper divisors (11842079).

123693889 is a wasteful number, since it uses less digits than its factorization.

123693889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49775.

The product of its digits is 559872, while the sum is 49.

The square root of 123693889 is about 11121.7754427969. The cubic root of 123693889 is about 498.2524176951.

The spelling of 123693889 in words is "one hundred twenty-three million, six hundred ninety-three thousand, eight hundred eighty-nine".