428473279 has 8 divisors (see below), whose sum is σ = 481495392. Its totient is φ = 378317280.

The previous prime is 428473277. The next prime is 428473319. The reversal of 428473279 is 972374824.

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

It is a cyclic number.

It is not a de Polignac number, because 428473279 - 2¹ = 428473277 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 (428473271) 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, 716212 + ... + 716809.

It is an arithmetic number, because the mean of its divisors is an integer number (60186924).

Almost surely, 2^428473279 is an apocalyptic number.

428473279 is a deficient number, since it is larger than the sum of its proper divisors (53022113).

428473279 is a wasteful number, since it uses less digits than its factorization.

428473279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433057.

The product of its digits is 677376, while the sum is 46.

The square root of 428473279 is about 20699.5961071708. The cubic root of 428473279 is about 753.8898814763.

The spelling of 428473279 in words is "four hundred twenty-eight million, four hundred seventy-three thousand, two hundred seventy-nine".