520434407 has 2 divisors, whose sum is σ = 520434408. Its totient is φ = 520434406.

The previous prime is 520434373. The next prime is 520434437. The reversal of 520434407 is 704434025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520434407 - 2²⁰ = 519385831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520434407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520434437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260217203 + 260217204.

It is an arithmetic number, because the mean of its divisors is an integer number (260217204).

Almost surely, 2^520434407 is an apocalyptic number.

520434407 is a deficient number, since it is larger than the sum of its proper divisors (1).

520434407 is an equidigital number, since it uses as much as digits as its factorization.

520434407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 520434407 is about 22813.0315170957. The cubic root of 520434407 is about 804.3690164951.

The spelling of 520434407 in words is "five hundred twenty million, four hundred thirty-four thousand, four hundred seven".