440672399 has 2 divisors, whose sum is σ = 440672400. Its totient is φ = 440672398.

The previous prime is 440672381. The next prime is 440672431. The reversal of 440672399 is 993276044.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440672399 - 2¹² = 440668303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440672599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220336199 + 220336200.

It is an arithmetic number, because the mean of its divisors is an integer number (220336200).

Almost surely, 2^440672399 is an apocalyptic number.

440672399 is a deficient number, since it is larger than the sum of its proper divisors (1).

440672399 is an equidigital number, since it uses as much as digits as its factorization.

440672399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 440672399 is about 20992.1985270719. The cubic root of 440672399 is about 760.9777345714.

It can be divided in two parts, 440672 and 399, that multiplied together give a triangular number (175828128 = T₁₈₇₅₂).

The spelling of 440672399 in words is "four hundred forty million, six hundred seventy-two thousand, three hundred ninety-nine".