4391026 has 8 divisors (see below), whose sum is σ = 6799104. Its totient is φ = 2124660.

The previous prime is 4391017. The next prime is 4391027. The reversal of 4391026 is 6201934.

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

It is a super-2 number, since 2×4391026² = 38562218665352, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35350 + ... + 35473.

It is an arithmetic number, because the mean of its divisors is an integer number (849888).

Almost surely, 2^4391026 is an apocalyptic number.

4391026 is a deficient number, since it is larger than the sum of its proper divisors (2408078).

4391026 is a wasteful number, since it uses less digits than its factorization.

4391026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70856.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 4391026 is about 2095.4775112131. The cubic root of 4391026 is about 163.7527754322.

The spelling of 4391026 in words is "four million, three hundred ninety-one thousand, twenty-six".