428017079 has 4 divisors (see below), whose sum is σ = 489162384. Its totient is φ = 366871776.

The previous prime is 428017069. The next prime is 428017151. The reversal of 428017079 is 970710824.

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 428017079 - 2⁴ = 428017063 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 (428017069) 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, 30572642 + ... + 30572655.

It is an arithmetic number, because the mean of its divisors is an integer number (122290596).

Almost surely, 2^428017079 is an apocalyptic number.

428017079 is a deficient number, since it is larger than the sum of its proper divisors (61145305).

428017079 is an equidigital number, since it uses as much as digits as its factorization.

428017079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61145304.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 428017079 is about 20688.5736337719. The cubic root of 428017079 is about 753.6222283047.

The spelling of 428017079 in words is "four hundred twenty-eight million, seventeen thousand, seventy-nine".