4258639 has 12 divisors (see below), whose sum is σ = 5404968. Its totient is φ = 3318000.

The previous prime is 4258609. The next prime is 4258643. The reversal of 4258639 is 9368524.

It is not a de Polignac number, because 4258639 - 2⁵ = 4258607 is a prime.

It is a super-2 number, since 2×4258639² = 36272012264642, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4¹¹ + 2⁷ + 5⁵ + 8 + 6⁴ + 3¹⁰ + 9³ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4258598 and 4258607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4258609) 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 11 ways as a sum of consecutive naturals, for example, 3412 + ... + 4489.

It is an arithmetic number, because the mean of its divisors is an integer number (450414).

Almost surely, 2^4258639 is an apocalyptic number.

4258639 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

4258639 is a deficient number, since it is larger than the sum of its proper divisors (1146329).

4258639 is a wasteful number, since it uses less digits than its factorization.

4258639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7926 (or 7919 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 4258639 is about 2063.6470143898. The cubic root of 4258639 is about 162.0902687487.

The spelling of 4258639 in words is "four million, two hundred fifty-eight thousand, six hundred thirty-nine".