428207963 has 4 divisors (see below), whose sum is σ = 431997528. Its totient is φ = 424418400.

The previous prime is 428207947. The next prime is 428208031. The reversal of 428207963 is 369702824.

It is a happy number.

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 428207963 - 2⁴ = 428207947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428207963.

It is not an unprimeable number, because it can be changed into a prime (428207903) 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, 1894613 + ... + 1894838.

It is an arithmetic number, because the mean of its divisors is an integer number (107999382).

Almost surely, 2^428207963 is an apocalyptic number.

428207963 is a deficient number, since it is larger than the sum of its proper divisors (3789565).

428207963 is a wasteful number, since it uses less digits than its factorization.

428207963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789564.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 428207963 is about 20693.1863906939. The cubic root of 428207963 is about 753.7342433408.

The spelling of 428207963 in words is "four hundred twenty-eight million, two hundred seven thousand, nine hundred sixty-three".