423263887 has 4 divisors (see below), whose sum is σ = 423380016. Its totient is φ = 423147760.

The previous prime is 423263881. The next prime is 423263899. The reversal of 423263887 is 788362324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423263887 - 2¹⁹ = 422739599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423263881) 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, 52414 + ... + 59947.

It is an arithmetic number, because the mean of its divisors is an integer number (105845004).

Almost surely, 2^423263887 is an apocalyptic number.

423263887 is a deficient number, since it is larger than the sum of its proper divisors (116129).

423263887 is a wasteful number, since it uses less digits than its factorization.

423263887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116128.

The product of its digits is 387072, while the sum is 43.

The square root of 423263887 is about 20573.3781134747. The cubic root of 423263887 is about 750.8221425942.

The spelling of 423263887 in words is "four hundred twenty-three million, two hundred sixty-three thousand, eight hundred eighty-seven".