123899768 has 8 divisors (see below), whose sum is σ = 232312080. Its totient is φ = 61949880.

The previous prime is 123899759. The next prime is 123899807. The reversal of 123899768 is 867998321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7743728 + ... + 7743743.

It is an arithmetic number, because the mean of its divisors is an integer number (29039010).

Almost surely, 2^123899768 is an apocalyptic number.

It is an amenable number.

123899768 is a deficient number, since it is larger than the sum of its proper divisors (108412312).

123899768 is a wasteful number, since it uses less digits than its factorization.

123899768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15487477 (or 15487473 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The square root of 123899768 is about 11131.0272661601. The cubic root of 123899768 is about 498.5286987921.

The spelling of 123899768 in words is "one hundred twenty-three million, eight hundred ninety-nine thousand, seven hundred sixty-eight".