428161659 has 4 divisors (see below), whose sum is σ = 570882216. Its totient is φ = 285441104.

The previous prime is 428161639. The next prime is 428161663. The reversal of 428161659 is 956161824.

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 428161659 - 2¹⁵ = 428128891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428161659.

It is not an unprimeable number, because it can be changed into a prime (428161619) 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, 71360274 + ... + 71360279.

It is an arithmetic number, because the mean of its divisors is an integer number (142720554).

Almost surely, 2^428161659 is an apocalyptic number.

428161659 is a deficient number, since it is larger than the sum of its proper divisors (142720557).

428161659 is a wasteful number, since it uses less digits than its factorization.

428161659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142720556.

The product of its digits is 103680, while the sum is 42.

The square root of 428161659 is about 20692.0675380688. The cubic root of 428161659 is about 753.7070741679.

The spelling of 428161659 in words is "four hundred twenty-eight million, one hundred sixty-one thousand, six hundred fifty-nine".