428415079 has 4 divisors (see below), whose sum is σ = 453615984. Its totient is φ = 403214176.

The previous prime is 428415067. The next prime is 428415103. The reversal of 428415079 is 970514824.

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 428415079 - 2¹⁷ = 428284007 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428415179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12600427 + ... + 12600460.

It is an arithmetic number, because the mean of its divisors is an integer number (113403996).

Almost surely, 2^428415079 is an apocalyptic number.

428415079 is a deficient number, since it is larger than the sum of its proper divisors (25200905).

428415079 is a wasteful number, since it uses less digits than its factorization.

428415079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25200904.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 428415079 is about 20698.1902348973. The cubic root of 428415079 is about 753.8557460315.

The spelling of 428415079 in words is "four hundred twenty-eight million, four hundred fifteen thousand, seventy-nine".