445405641 has 8 divisors (see below), whose sum is σ = 595467840. Its totient is φ = 296140272.

The previous prime is 445405601. The next prime is 445405643. The reversal of 445405641 is 146504544.

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

It is not a de Polignac number, because 445405641 - 2¹¹ = 445403593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (445405643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197901 + ... + 200138.

It is an arithmetic number, because the mean of its divisors is an integer number (74433480).

Almost surely, 2^445405641 is an apocalyptic number.

It is an amenable number.

445405641 is a deficient number, since it is larger than the sum of its proper divisors (150062199).

445405641 is a wasteful number, since it uses less digits than its factorization.

445405641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398415.

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 445405641 is about 21104.6355334557. The cubic root of 445405641 is about 763.6925799382.

The spelling of 445405641 in words is "four hundred forty-five million, four hundred five thousand, six hundred forty-one".