28979359 has 4 divisors (see below), whose sum is σ = 29260816. Its totient is φ = 28697904.

The previous prime is 28979329. The next prime is 28979369. The reversal of 28979359 is 95397982.

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 28979359 - 2⁷ = 28979231 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 (28979329) 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, 140574 + ... + 140779.

It is an arithmetic number, because the mean of its divisors is an integer number (7315204).

Almost surely, 2^28979359 is an apocalyptic number.

28979359 is a deficient number, since it is larger than the sum of its proper divisors (281457).

28979359 is a wasteful number, since it uses less digits than its factorization.

28979359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281456.

The product of its digits is 1224720, while the sum is 52.

The square root of 28979359 is about 5383.2479972596. The cubic root of 28979359 is about 307.1587736685.

The spelling of 28979359 in words is "twenty-eight million, nine hundred seventy-nine thousand, three hundred fifty-nine".