4408991 has 2 divisors, whose sum is σ = 4408992. Its totient is φ = 4408990.

The previous prime is 4408973. The next prime is 4408993. The reversal of 4408991 is 1998044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4408991 - 2¹⁰ = 4407967 is a prime.

Together with 4408993, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4408993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2204495 + 2204496.

It is an arithmetic number, because the mean of its divisors is an integer number (2204496).

Almost surely, 2^4408991 is an apocalyptic number.

4408991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4408991 is an equidigital number, since it uses as much as digits as its factorization.

4408991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 4408991 is about 2099.7597481617. The cubic root of 4408991 is about 163.9757920842.

The spelling of 4408991 in words is "four million, four hundred eight thousand, nine hundred ninety-one".