123898909935 has 16 divisors (see below), whose sum is σ = 198320947200. Its totient is φ = 66051854880.

The previous prime is 123898909891. The next prime is 123898909943. The reversal of 123898909935 is 539909898321.

It is not a de Polignac number, because 123898909935 - 2¹³ = 123898901743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1685551 + ... + 1757520.

It is an arithmetic number, because the mean of its divisors is an integer number (12395059200).

Almost surely, 2^123898909935 is an apocalyptic number.

123898909935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123898909935 is a deficient number, since it is larger than the sum of its proper divisors (74422037265).

123898909935 is a wasteful number, since it uses less digits than its factorization.

123898909935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445478.

The product of its (nonzero) digits is 37791360, while the sum is 66.

The spelling of 123898909935 in words is "one hundred twenty-three billion, eight hundred ninety-eight million, nine hundred nine thousand, nine hundred thirty-five".