4013858 has 4 divisors (see below), whose sum is σ = 6020790. Its totient is φ = 2006928.

The previous prime is 4013857. The next prime is 4013881. The reversal of 4013858 is 8583104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4012009 + 1849 = 2003^2 + 43^2 .

It is a super-2 number, since 2×4013858² = 32222112088328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4013858.

It is not an unprimeable number, because it can be changed into a prime (4013851) 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 as a sum of consecutive naturals, namely, 1003463 + ... + 1003466.

Almost surely, 2^4013858 is an apocalyptic number.

4013858 is a deficient number, since it is larger than the sum of its proper divisors (2006932).

4013858 is a wasteful number, since it uses less digits than its factorization.

4013858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006931.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 4013858 is about 2003.4615044967. The cubic root of 4013858 is about 158.9232122660.

The spelling of 4013858 in words is "four million, thirteen thousand, eight hundred fifty-eight".