509859047 has 2 divisors, whose sum is σ = 509859048. Its totient is φ = 509859046.

The previous prime is 509859043. The next prime is 509859059. The reversal of 509859047 is 740958905.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 509859047 - 2² = 509859043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 509858992 and 509859010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509859043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254929523 + 254929524.

It is an arithmetic number, because the mean of its divisors is an integer number (254929524).

Almost surely, 2^509859047 is an apocalyptic number.

509859047 is a deficient number, since it is larger than the sum of its proper divisors (1).

509859047 is an equidigital number, since it uses as much as digits as its factorization.

509859047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 509859047 is about 22580.0586137415. The cubic root of 509859047 is about 798.8833624384.

The spelling of 509859047 in words is "five hundred nine million, eight hundred fifty-nine thousand, forty-seven".