123749893471 has 4 divisors (see below), whose sum is σ = 123751091152. Its totient is φ = 123748695792.

The previous prime is 123749893433. The next prime is 123749893493. The reversal of 123749893471 is 174398947321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123749893471 - 2¹⁷ = 123749762399 is a prime.

It is a super-3 number, since 3×123749893471³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123749893411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427515 + ... + 655948.

It is an arithmetic number, because the mean of its divisors is an integer number (30937772788).

Almost surely, 2^123749893471 is an apocalyptic number.

123749893471 is a deficient number, since it is larger than the sum of its proper divisors (1197681).

123749893471 is a wasteful number, since it uses less digits than its factorization.

123749893471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197680.

The product of its digits is 9144576, while the sum is 58.

The spelling of 123749893471 in words is "one hundred twenty-three billion, seven hundred forty-nine million, eight hundred ninety-three thousand, four hundred seventy-one".