440241491 has 2 divisors, whose sum is σ = 440241492. Its totient is φ = 440241490.

The previous prime is 440241449. The next prime is 440241511. The reversal of 440241491 is 194142044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440241491 - 2⁶ = 440241427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (440241391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220120745 + 220120746.

It is an arithmetic number, because the mean of its divisors is an integer number (220120746).

Almost surely, 2^440241491 is an apocalyptic number.

440241491 is a deficient number, since it is larger than the sum of its proper divisors (1).

440241491 is an equidigital number, since it uses as much as digits as its factorization.

440241491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 440241491 is about 20981.9324896445. The cubic root of 440241491 is about 760.7296150051.

The spelling of 440241491 in words is "four hundred forty million, two hundred forty-one thousand, four hundred ninety-one".