423188953 has 4 divisors (see below), whose sum is σ = 461660688. Its totient is φ = 384717220.

The previous prime is 423188933. The next prime is 423188971. The reversal of 423188953 is 359881324.

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 423188953 - 2¹³ = 423180761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423188933) 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, 19235851 + ... + 19235872.

It is an arithmetic number, because the mean of its divisors is an integer number (115415172).

Almost surely, 2^423188953 is an apocalyptic number.

It is an amenable number.

423188953 is a deficient number, since it is larger than the sum of its proper divisors (38471735).

423188953 is a wasteful number, since it uses less digits than its factorization.

423188953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38471734.

The product of its digits is 207360, while the sum is 43.

The square root of 423188953 is about 20571.5568929529. The cubic root of 423188953 is about 750.7778318394. Note that the first 3 decimals are identical.

The spelling of 423188953 in words is "four hundred twenty-three million, one hundred eighty-eight thousand, nine hundred fifty-three".