445890445 has 108 divisors (see below), whose sum is σ = 749154420. Its totient is φ = 253693440.

The previous prime is 445890439. The next prime is 445890451. The reversal of 445890445 is 544098544.

It is an interprime number because it is at equal distance from previous prime (445890439) and next prime (445890451).

It can be written as a sum of positive squares in 6 ways, for example, as 153685609 + 292204836 = 12397^2 + 17094^2 .

It is not a de Polignac number, because 445890445 - 2¹¹ = 445888397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 5009961 + ... + 5010049.

It is an arithmetic number, because the mean of its divisors is an integer number (6936615).

Almost surely, 2^445890445 is an apocalyptic number.

It is an amenable number.

445890445 is a deficient number, since it is larger than the sum of its proper divisors (303263975).

445890445 is a wasteful number, since it uses less digits than its factorization.

445890445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 43.

The square root of 445890445 is about 21116.1181328387. The cubic root of 445890445 is about 763.9695611394.

The spelling of 445890445 in words is "four hundred forty-five million, eight hundred ninety thousand, four hundred forty-five".