440987453 has 2 divisors, whose sum is σ = 440987454. Its totient is φ = 440987452.

The previous prime is 440987419. The next prime is 440987471. The reversal of 440987453 is 354789044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411805849 + 29181604 = 20293^2 + 5402^2 .

It is a cyclic number.

It is not a de Polignac number, because 440987453 - 2¹² = 440983357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440987413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220493726 + 220493727.

It is an arithmetic number, because the mean of its divisors is an integer number (220493727).

Almost surely, 2^440987453 is an apocalyptic number.

It is an amenable number.

440987453 is a deficient number, since it is larger than the sum of its proper divisors (1).

440987453 is an equidigital number, since it uses as much as digits as its factorization.

440987453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 440987453 is about 20999.7012597799. The cubic root of 440987453 is about 761.1590423238.

The spelling of 440987453 in words is "four hundred forty million, nine hundred eighty-seven thousand, four hundred fifty-three".