4280839 has 4 divisors (see below), whose sum is σ = 4312224. Its totient is φ = 4249456.

The previous prime is 4280827. The next prime is 4280873. The reversal of 4280839 is 9380824.

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 4280839 - 2¹⁵ = 4248071 is a prime.

It is a Duffinian number.

4280839 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4280879) 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, 15487 + ... + 15760.

It is an arithmetic number, because the mean of its divisors is an integer number (1078056).

Almost surely, 2^4280839 is an apocalyptic number.

4280839 is a deficient number, since it is larger than the sum of its proper divisors (31385).

4280839 is a wasteful number, since it uses less digits than its factorization.

4280839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31384.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 4280839 is about 2069.0188496000. The cubic root of 4280839 is about 162.3714359843.

The spelling of 4280839 in words is "four million, two hundred eighty thousand, eight hundred thirty-nine".