4049858 has 6 divisors (see below), whose sum is σ = 6079059. Its totient is φ = 2023506.

The previous prime is 4049833. The next prime is 4049873. The reversal of 4049858 is 8589404.

It can be written as a sum of positive squares in only one way, i.e., 2024929 + 2024929 = 1423^2 + 1423^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1423.

It is a super-3 number, since 3×4049858³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 2135 + ... + 3557.

Almost surely, 2^4049858 is an apocalyptic number.

4049858 is a deficient number, since it is larger than the sum of its proper divisors (2029201).

4049858 is an frugal number, since it uses more digits than its factorization.

4049858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848 (or 1425 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 4049858 is about 2012.4258992569. The cubic root of 4049858 is about 159.3969224233.

The spelling of 4049858 in words is "four million, forty-nine thousand, eight hundred fifty-eight".