428417861 has 16 divisors (see below), whose sum is σ = 449100288. Its totient is φ = 408216000.

The previous prime is 428417839. The next prime is 428417929. The reversal of 428417861 is 168714824.

It is a cyclic number.

It is not a de Polignac number, because 428417861 - 2⁶ = 428417797 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 (428417161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 917150 + ... + 917616.

It is an arithmetic number, because the mean of its divisors is an integer number (28068768).

Almost surely, 2^428417861 is an apocalyptic number.

It is an amenable number.

428417861 is a deficient number, since it is larger than the sum of its proper divisors (20682427).

428417861 is a wasteful number, since it uses less digits than its factorization.

428417861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892.

The product of its digits is 86016, while the sum is 41.

The square root of 428417861 is about 20698.2574387314. The cubic root of 428417861 is about 753.8573777996.

The spelling of 428417861 in words is "four hundred twenty-eight million, four hundred seventeen thousand, eight hundred sixty-one".