440354491 has 2 divisors, whose sum is σ = 440354492. Its totient is φ = 440354490.

The previous prime is 440354483. The next prime is 440354521. The reversal of 440354491 is 194453044.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440354491 - 2³ = 440354483 is a prime.

It is not a weakly prime, because it can be changed into another prime (440354401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220177245 + 220177246.

It is an arithmetic number, because the mean of its divisors is an integer number (220177246).

Almost surely, 2^440354491 is an apocalyptic number.

440354491 is a deficient number, since it is larger than the sum of its proper divisors (1).

440354491 is an equidigital number, since it uses as much as digits as its factorization.

440354491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 440354491 is about 20984.6251098274. The cubic root of 440354491 is about 760.7946967799.

The spelling of 440354491 in words is "four hundred forty million, three hundred fifty-four thousand, four hundred ninety-one".