440132591 has 2 divisors, whose sum is σ = 440132592. Its totient is φ = 440132590.

The previous prime is 440132579. The next prime is 440132593. The reversal of 440132591 is 195231044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440132591 - 2⁶ = 440132527 is a prime.

Together with 440132593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440132593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220066295 + 220066296.

It is an arithmetic number, because the mean of its divisors is an integer number (220066296).

Almost surely, 2^440132591 is an apocalyptic number.

440132591 is a deficient number, since it is larger than the sum of its proper divisors (1).

440132591 is an equidigital number, since it uses as much as digits as its factorization.

440132591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 440132591 is about 20979.3372392933. The cubic root of 440132591 is about 760.6668840657. Note that the first 3 decimals are identical.

The spelling of 440132591 in words is "four hundred forty million, one hundred thirty-two thousand, five hundred ninety-one".