428402911 has 4 divisors (see below), whose sum is σ = 428518512. Its totient is φ = 428287312.

The previous prime is 428402903. The next prime is 428402951. The reversal of 428402911 is 119204824.

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 428402911 - 2³ = 428402903 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 (428402951) 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, 52051 + ... + 59716.

It is an arithmetic number, because the mean of its divisors is an integer number (107129628).

Almost surely, 2^428402911 is an apocalyptic number.

428402911 is a deficient number, since it is larger than the sum of its proper divisors (115601).

428402911 is a wasteful number, since it uses less digits than its factorization.

428402911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115600.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 428402911 is about 20697.8962940681. The cubic root of 428402911 is about 753.8486088694.

The spelling of 428402911 in words is "four hundred twenty-eight million, four hundred two thousand, nine hundred eleven".