4491401 has 2 divisors, whose sum is σ = 4491402. Its totient is φ = 4491400.

The previous prime is 4491359. The next prime is 4491407. The reversal of 4491401 is 1041944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4000000 + 491401 = 2000^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 4491401 - 2⁶ = 4491337 is a prime.

It is an Ulam number.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (4491407) 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 as a sum of consecutive naturals, namely, 2245700 + 2245701.

It is an arithmetic number, because the mean of its divisors is an integer number (2245701).

Almost surely, 2^4491401 is an apocalyptic number.

It is an amenable number.

4491401 is a deficient number, since it is larger than the sum of its proper divisors (1).

4491401 is an equidigital number, since it uses as much as digits as its factorization.

4491401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 4491401 is about 2119.2925706471. The cubic root of 4491401 is about 164.9911351221.

It can be divided in two parts, 4 and 491401, that multiplied together give a square (1965604 = 1402²).

The spelling of 4491401 in words is "four million, four hundred ninety-one thousand, four hundred one".