4208491 has 8 divisors (see below), whose sum is σ = 4940000. Its totient is φ = 3509568.

The previous prime is 4208489. The next prime is 4208507. The reversal of 4208491 is 1948024.

4208491 = T₂₁₈ + T₂₁₉ + ... + T₃₂₈.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4208491 - 2¹ = 4208489 is a prime.

It is a super-2 number, since 2×4208491² = 35422792994162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4208441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7866 + ... + 8383.

It is an arithmetic number, because the mean of its divisors is an integer number (617500).

Almost surely, 2^4208491 is an apocalyptic number.

4208491 is a deficient number, since it is larger than the sum of its proper divisors (731509).

4208491 is a wasteful number, since it uses less digits than its factorization.

4208491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16293.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 4208491 is about 2051.4606991117. The cubic root of 4208491 is about 161.4515185784.

It can be divided in two parts, 420 and 8491, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 4208491 in words is "four million, two hundred eight thousand, four hundred ninety-one".