423932217 has 4 divisors (see below), whose sum is σ = 565242960. Its totient is φ = 282621476.

The previous prime is 423932207. The next prime is 423932219. The reversal of 423932217 is 712239324.

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 a cyclic number.

It is not a de Polignac number, because 423932217 - 2⁸ = 423931961 is a prime.

It is a super-2 number, since 2×423932217² = 359437049221070178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (423932219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70655367 + ... + 70655372.

It is an arithmetic number, because the mean of its divisors is an integer number (141310740).

Almost surely, 2^423932217 is an apocalyptic number.

It is an amenable number.

423932217 is a deficient number, since it is larger than the sum of its proper divisors (141310743).

423932217 is a wasteful number, since it uses less digits than its factorization.

423932217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141310742.

The product of its digits is 18144, while the sum is 33.

The square root of 423932217 is about 20589.6142994472. The cubic root of 423932217 is about 751.2171153275.

The spelling of 423932217 in words is "four hundred twenty-three million, nine hundred thirty-two thousand, two hundred seventeen".