509411423 has 4 divisors (see below), whose sum is σ = 509539800. Its totient is φ = 509283048.

The previous prime is 509411407. The next prime is 509411431. The reversal of 509411423 is 324114905.

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 509411423 - 2⁴ = 509411407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509411453) 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, 58040 + ... + 66237.

It is an arithmetic number, because the mean of its divisors is an integer number (127384950).

Almost surely, 2^509411423 is an apocalyptic number.

509411423 is a deficient number, since it is larger than the sum of its proper divisors (128377).

509411423 is a wasteful number, since it uses less digits than its factorization.

509411423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128376.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 509411423 is about 22570.1445055188. The cubic root of 509411423 is about 798.6495042971.

The spelling of 509411423 in words is "five hundred nine million, four hundred eleven thousand, four hundred twenty-three".