509690047 has 2 divisors, whose sum is σ = 509690048. Its totient is φ = 509690046.

The previous prime is 509690021. The next prime is 509690053. The reversal of 509690047 is 740096905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509690047 - 2⁷ = 509689919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 509689991 and 509690009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509690057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254845023 + 254845024.

It is an arithmetic number, because the mean of its divisors is an integer number (254845024).

Almost surely, 2^509690047 is an apocalyptic number.

509690047 is a deficient number, since it is larger than the sum of its proper divisors (1).

509690047 is an equidigital number, since it uses as much as digits as its factorization.

509690047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 509690047 is about 22576.3160635211. The cubic root of 509690047 is about 798.7950856169.

The spelling of 509690047 in words is "five hundred nine million, six hundred ninety thousand, forty-seven".