123899634 has 12 divisors (see below), whose sum is σ = 268449246. Its totient is φ = 41299872.

The previous prime is 123899617. The next prime is 123899701. The reversal of 123899634 is 436998321.

It is a happy number.

123899634 is a `hidden beast` number, since 1 + 2 + 3 + 8 + 9 + 9 + 634 = 666.

It can be written as a sum of positive squares in only one way, i.e., 123543225 + 356409 = 11115^2 + 597^2 .

It is a super-2 number, since 2×123899634² = 30702238610667912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123899634.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3441639 + ... + 3441674.

Almost surely, 2^123899634 is an apocalyptic number.

123899634 is an abundant number, since it is smaller than the sum of its proper divisors (144549612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123899634 is a wasteful number, since it uses less digits than its factorization.

123899634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6883321 (or 6883318 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 123899634 is about 11131.0212469476. The cubic root of 123899634 is about 498.5285190693.

The spelling of 123899634 in words is "one hundred twenty-three million, eight hundred ninety-nine thousand, six hundred thirty-four".