440151939449 has 4 divisors (see below), whose sum is σ = 440207896464. Its totient is φ = 440095982436.

The previous prime is 440151939443. The next prime is 440151939457. The reversal of 440151939449 is 944939151044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440151939449 - 2⁴ = 440151939433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 440151939449.

It is not an unprimeable number, because it can be changed into a prime (440151939443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27966707 + ... + 27982440.

It is an arithmetic number, because the mean of its divisors is an integer number (110051974116).

Almost surely, 2^440151939449 is an apocalyptic number.

It is an amenable number.

440151939449 is a deficient number, since it is larger than the sum of its proper divisors (55957015).

440151939449 is an equidigital number, since it uses as much as digits as its factorization.

440151939449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55957014.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 440151939449 in words is "four hundred forty billion, one hundred fifty-one million, nine hundred thirty-nine thousand, four hundred forty-nine".