44458987609 has 3 divisors (see below), whose sum is σ = 44459198463. Its totient is φ = 44458776756.

The previous prime is 44458987597. The next prime is 44458987627. The reversal of 44458987609 is 90678985444.

The square root of 44458987609 is 210853.

It is a perfect power (a square), and thus also a powerful number.

44458987609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 43545255625 + 913731984 = 208675^2 + 30228^2 .

It is not a de Polignac number, because 44458987609 - 2⁵ = 44458987577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44458982609) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 105427 + ... + 316279.

It is an arithmetic number, because the mean of its divisors is an integer number (14819732821).

Almost surely, 2^44458987609 is an apocalyptic number.

44458987609 is the 210853-rd square number.

44458987609 is the 105427-th centered octagonal number.

It is an amenable number.

44458987609 is a deficient number, since it is larger than the sum of its proper divisors (210854).

44458987609 is an frugal number, since it uses more digits than its factorization.

44458987609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421706 (or 210853 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 64.

Multiplying 44458987609 by its sum of digits (64), we get a square (2845375206976 = 1686824²).

The spelling of 44458987609 in words is "forty-four billion, four hundred fifty-eight million, nine hundred eighty-seven thousand, six hundred nine".