423091517 has 2 divisors, whose sum is σ = 423091518. Its totient is φ = 423091516.

The previous prime is 423091507. The next prime is 423091523. The reversal of 423091517 is 715190324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421850521 + 1240996 = 20539^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 423091517 - 2²⁰ = 422042941 is a prime.

It is a super-2 number, since 2×423091517² = 358012863514722578, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423091507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211545758 + 211545759.

It is an arithmetic number, because the mean of its divisors is an integer number (211545759).

Almost surely, 2^423091517 is an apocalyptic number.

It is an amenable number.

423091517 is a deficient number, since it is larger than the sum of its proper divisors (1).

423091517 is an equidigital number, since it uses as much as digits as its factorization.

423091517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 423091517 is about 20569.1885352826. The cubic root of 423091517 is about 750.7202071438.

The spelling of 423091517 in words is "four hundred twenty-three million, ninety-one thousand, five hundred seventeen".