123913447 has 4 divisors (see below), whose sum is σ = 141615376. Its totient is φ = 106211520.

The previous prime is 123913409. The next prime is 123913453. The reversal of 123913447 is 744319321.

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 123913447 - 2¹¹ = 123911399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123913477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8850954 + ... + 8850967.

It is an arithmetic number, because the mean of its divisors is an integer number (35403844).

Almost surely, 2^123913447 is an apocalyptic number.

123913447 is a deficient number, since it is larger than the sum of its proper divisors (17701929).

123913447 is an equidigital number, since it uses as much as digits as its factorization.

123913447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17701928.

The product of its digits is 18144, while the sum is 34.

The square root of 123913447 is about 11131.6417028217. The cubic root of 123913447 is about 498.5470445976.

The spelling of 123913447 in words is "one hundred twenty-three million, nine hundred thirteen thousand, four hundred forty-seven".