4391901 has 20 divisors (see below), whose sum is σ = 6679200. Its totient is φ = 2875176.

The previous prime is 4391897. The next prime is 4391903. The reversal of 4391901 is 1091934.

It is not a de Polignac number, because 4391901 - 2² = 4391897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391903) 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 19 ways as a sum of consecutive naturals, for example, 4320 + ... + 5238.

It is an arithmetic number, because the mean of its divisors is an integer number (333960).

Almost surely, 2^4391901 is an apocalyptic number.

It is an amenable number.

4391901 is a deficient number, since it is larger than the sum of its proper divisors (2287299).

4391901 is an equidigital number, since it uses as much as digits as its factorization.

4391901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 4391901 is about 2095.6862837744. The cubic root of 4391901 is about 163.7636517181.

The spelling of 4391901 in words is "four million, three hundred ninety-one thousand, nine hundred one".