423635169 has 4 divisors (see below), whose sum is σ = 564846896. Its totient is φ = 282423444.

The previous prime is 423635159. The next prime is 423635231. The reversal of 423635169 is 961536324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 423635169 - 2⁷ = 423635041 is a prime.

It is a super-2 number, since 2×423635169² = 358933512827317122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423635129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70605859 + ... + 70605864.

It is an arithmetic number, because the mean of its divisors is an integer number (141211724).

Almost surely, 2^423635169 is an apocalyptic number.

It is an amenable number.

423635169 is a deficient number, since it is larger than the sum of its proper divisors (141211727).

423635169 is a wasteful number, since it uses less digits than its factorization.

423635169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141211726.

The product of its digits is 116640, while the sum is 39.

The square root of 423635169 is about 20582.3994956856. The cubic root of 423635169 is about 751.0416158234.

The spelling of 423635169 in words is "four hundred twenty-three million, six hundred thirty-five thousand, one hundred sixty-nine".