423637117 has 2 divisors, whose sum is σ = 423637118. Its totient is φ = 423637116.

The previous prime is 423637057. The next prime is 423637153. The reversal of 423637117 is 711736324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293813881 + 129823236 = 17141^2 + 11394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423637117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423637157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211818558 + 211818559.

It is an arithmetic number, because the mean of its divisors is an integer number (211818559).

Almost surely, 2^423637117 is an apocalyptic number.

It is an amenable number.

423637117 is a deficient number, since it is larger than the sum of its proper divisors (1).

423637117 is an equidigital number, since it uses as much as digits as its factorization.

423637117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 34.

The square root of 423637117 is about 20582.4468176162. The cubic root of 423637117 is about 751.0427669922.

The spelling of 423637117 in words is "four hundred twenty-three million, six hundred thirty-seven thousand, one hundred seventeen".