423966669 has 24 divisors (see below), whose sum is σ = 659124288. Its totient is φ = 241698240.

The previous prime is 423966637. The next prime is 423966671. The reversal of 423966669 is 966669324.

It is not a de Polignac number, because 423966669 - 2⁵ = 423966637 is a prime.

It is a super-2 number, since 2×423966669² = 359495472845911122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423966619) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64024 + ... + 70334.

It is an arithmetic number, because the mean of its divisors is an integer number (27463512).

Almost surely, 2^423966669 is an apocalyptic number.

423966669 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

423966669 is a deficient number, since it is larger than the sum of its proper divisors (235157619).

423966669 is a wasteful number, since it uses less digits than its factorization.

423966669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6785 (or 6778 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 51.

The square root of 423966669 is about 20590.4509178405. The cubic root of 423966669 is about 751.2374646742.

The spelling of 423966669 in words is "four hundred twenty-three million, nine hundred sixty-six thousand, six hundred sixty-nine".