440341591 has 2 divisors, whose sum is σ = 440341592. Its totient is φ = 440341590.

The previous prime is 440341567. The next prime is 440341661. The reversal of 440341591 is 195143044.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440341591 is a prime.

It is a super-2 number, since 2×440341591² = 387801433528822562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440341501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220170795 + 220170796.

It is an arithmetic number, because the mean of its divisors is an integer number (220170796).

Almost surely, 2^440341591 is an apocalyptic number.

440341591 is a deficient number, since it is larger than the sum of its proper divisors (1).

440341591 is an equidigital number, since it uses as much as digits as its factorization.

440341591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 440341591 is about 20984.3177396836. The cubic root of 440341591 is about 760.7872676535.

The spelling of 440341591 in words is "four hundred forty million, three hundred forty-one thousand, five hundred ninety-one".