445454090 has 8 divisors (see below), whose sum is σ = 801817380. Its totient is φ = 178181632.

The previous prime is 445454089. The next prime is 445454099. The reversal of 445454090 is 90454544.

It can be written as a sum of positive squares in 2 ways, for example, as 440706049 + 4748041 = 20993^2 + 2179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 445454090.

It is not an unprimeable number, because it can be changed into a prime (445454099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22272695 + ... + 22272714.

Almost surely, 2^445454090 is an apocalyptic number.

445454090 is a deficient number, since it is larger than the sum of its proper divisors (356363290).

445454090 is a wasteful number, since it uses less digits than its factorization.

445454090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44545416.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 445454090 is about 21105.7833306419. The cubic root of 445454090 is about 763.7202691552.

The spelling of 445454090 in words is "four hundred forty-five million, four hundred fifty-four thousand, ninety".