123491847 has 8 divisors (see below), whose sum is σ = 164757744. Its totient is φ = 82276928.

The previous prime is 123491827. The next prime is 123491857. The reversal of 123491847 is 748194321.

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 123491847 - 2¹⁵ = 123459079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123491827) 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, 6678 + ... + 17075.

It is an arithmetic number, because the mean of its divisors is an integer number (20594718).

Almost surely, 2^123491847 is an apocalyptic number.

123491847 is a deficient number, since it is larger than the sum of its proper divisors (41265897).

123491847 is a wasteful number, since it uses less digits than its factorization.

123491847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25489.

The product of its digits is 48384, while the sum is 39.

The square root of 123491847 is about 11112.6885585802. The cubic root of 123491847 is about 497.9809874840.

It can be divided in two parts, 12349 and 1847, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 123491847 in words is "one hundred twenty-three million, four hundred ninety-one thousand, eight hundred forty-seven".