520406923 has 8 divisors (see below), whose sum is σ = 526406400. Its totient is φ = 514432128.

The previous prime is 520406917. The next prime is 520406933. The reversal of 520406923 is 329604025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520406923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520406933) 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, 38038 + ... + 49876.

It is an arithmetic number, because the mean of its divisors is an integer number (65800800).

Almost surely, 2^520406923 is an apocalyptic number.

520406923 is a deficient number, since it is larger than the sum of its proper divisors (5999477).

520406923 is a wasteful number, since it uses less digits than its factorization.

520406923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12341.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 520406923 is about 22812.4291341365. The cubic root of 520406923 is about 804.3548567426.

The spelling of 520406923 in words is "five hundred twenty million, four hundred six thousand, nine hundred twenty-three".