Search a number
445369 = 3712037

445369 has 4 divisors (see below), whose sum is σ = 457444. Its totient is φ = 433296.

The previous prime is 445363. The next prime is 445427. The reversal of 445369 is 963544.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 169744 + 275625 = 412^2 + 525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-445369 is a prime.

It is a super-2 number, since 2×4453692 = 396707092322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 445369.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5982 + ... + 6055.

It is an arithmetic number, because the mean of its divisors is an integer number (114361).

2445369 is an apocalyptic number.

It is an amenable number.

445369 is a deficient number, since it is larger than the sum of its proper divisors (12075).

445369 is a wasteful number, since it uses less digits than its factorization.

445369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12074.

The product of its digits is 12960, while the sum is 31.

The square root of 445369 is about 667.3597230879. The cubic root of 445369 is about 76.3671637809.

Adding to 445369 its product of digits (12960), we get a square (458329 = 6772).

It can be divided in two parts, 4 and 45369, that multiplied together give a square (181476 = 4262).

The spelling of 445369 in words is "four hundred forty-five thousand, three hundred sixty-nine".

Divisors: 1 37 12037 445369