428455423 has 4 divisors (see below), whose sum is σ = 467405928. Its totient is φ = 389504920.

The previous prime is 428455421. The next prime is 428455427. The reversal of 428455423 is 324554824.

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 428455423 - 2¹ = 428455421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428455421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19475236 + ... + 19475257.

It is an arithmetic number, because the mean of its divisors is an integer number (116851482).

Almost surely, 2^428455423 is an apocalyptic number.

428455423 is a deficient number, since it is larger than the sum of its proper divisors (38950505).

428455423 is a wasteful number, since it uses less digits than its factorization.

428455423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38950504.

The product of its digits is 153600, while the sum is 37.

The square root of 428455423 is about 20699.1647899136. The cubic root of 428455423 is about 753.8794089098.

The spelling of 428455423 in words is "four hundred twenty-eight million, four hundred fifty-five thousand, four hundred twenty-three".