428141639 has 8 divisors (see below), whose sum is σ = 443871792. Its totient is φ = 412663360.

The previous prime is 428141633. The next prime is 428141647. The reversal of 428141639 is 936141824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428141639 - 2²⁴ = 411364423 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 (428141633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59504 + ... + 66309.

It is an arithmetic number, because the mean of its divisors is an integer number (55483974).

Almost surely, 2^428141639 is an apocalyptic number.

428141639 is a deficient number, since it is larger than the sum of its proper divisors (15730153).

428141639 is a wasteful number, since it uses less digits than its factorization.

428141639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125937.

The product of its digits is 41472, while the sum is 38.

The square root of 428141639 is about 20691.5837721524. The cubic root of 428141639 is about 753.6953266963.

The spelling of 428141639 in words is "four hundred twenty-eight million, one hundred forty-one thousand, six hundred thirty-nine".