445138 has 8 divisors (see below), whose sum is σ = 673200. Its totient is φ = 220740.

The previous prime is 445103. The next prime is 445141. The reversal of 445138 is 831544.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588 + ... + 1111.

It is an arithmetic number, because the mean of its divisors is an integer number (84150).

2⁴⁴⁵¹³⁸ is an apocalyptic number.

445138 is a deficient number, since it is larger than the sum of its proper divisors (228062).

445138 is a wasteful number, since it uses less digits than its factorization.

445138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832.

The product of its digits is 1920, while the sum is 25.

The square root of 445138 is about 667.1866305615. The cubic root of 445138 is about 76.3539583523.

It can be divided in two parts, 44513 and 8, that added together give a square (44521 = 211²).

The spelling of 445138 in words is "four hundred forty-five thousand, one hundred thirty-eight".