123961799 has 8 divisors (see below), whose sum is σ = 133611072. Its totient is φ = 114328800.

The previous prime is 123961793. The next prime is 123961813. The reversal of 123961799 is 997169321.

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 123961799 - 2⁸ = 123961543 is a prime.

It is a super-2 number, since 2×123961799² = 30733055222632802, 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 (123961793) 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, 15149 + ... + 21849.

It is an arithmetic number, because the mean of its divisors is an integer number (16701384).

Almost surely, 2^123961799 is an apocalyptic number.

123961799 is a deficient number, since it is larger than the sum of its proper divisors (9649273).

123961799 is a wasteful number, since it uses less digits than its factorization.

123961799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8137.

The product of its digits is 183708, while the sum is 47.

The square root of 123961799 is about 11133.8133179967. The cubic root of 123961799 is about 498.6118818222.

The spelling of 123961799 in words is "one hundred twenty-three million, nine hundred sixty-one thousand, seven hundred ninety-nine".