428179049 has 4 divisors (see below), whose sum is σ = 432593364. Its totient is φ = 423764736.

The previous prime is 428179039. The next prime is 428179067. The reversal of 428179049 is 940971824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356945449 + 71233600 = 18893^2 + 8440^2 .

It is a cyclic number.

It is not a de Polignac number, because 428179049 - 2²⁴ = 411401833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (428179039) 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, 2207012 + ... + 2207205.

It is an arithmetic number, because the mean of its divisors is an integer number (108148341).

Almost surely, 2^428179049 is an apocalyptic number.

It is an amenable number.

428179049 is a deficient number, since it is larger than the sum of its proper divisors (4414315).

428179049 is an equidigital number, since it uses as much as digits as its factorization.

428179049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4414314.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 428179049 is about 20692.4877431400. The cubic root of 428179049 is about 753.7172780931.

The spelling of 428179049 in words is "four hundred twenty-eight million, one hundred seventy-nine thousand, forty-nine".