4204945 has 4 divisors (see below), whose sum is σ = 5045940. Its totient is φ = 3363952.

The previous prime is 4204943. The next prime is 4204961. The reversal of 4204945 is 5494024.

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 3326976 + 877969 = 1824^2 + 937^2 .

It is a cyclic number.

It is not a de Polignac number, because 4204945 - 2¹ = 4204943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4204943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420490 + ... + 420499.

It is an arithmetic number, because the mean of its divisors is an integer number (1261485).

Almost surely, 2^4204945 is an apocalyptic number.

It is an amenable number.

4204945 is a deficient number, since it is larger than the sum of its proper divisors (840995).

4204945 is an equidigital number, since it uses as much as digits as its factorization.

4204945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840994.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 4204945 is about 2050.5962547513. The cubic root of 4204945 is about 161.4061604397.

Adding to 4204945 its reverse (5494024), we get a palindrome (9698969).

The spelling of 4204945 in words is "four million, two hundred four thousand, nine hundred forty-five".