4465021 has 6 divisors (see below), whose sum is σ = 4907966. Its totient is φ = 4059000.

The previous prime is 4465009. The next prime is 4465031. The reversal of 4465021 is 1205644.

It can be written as a sum of positive squares in only one way, i.e., 2544025 + 1920996 = 1595^2 + 1386^2 .

It is not a de Polignac number, because 4465021 - 2⁷ = 4464893 is a prime.

It is a Duffinian number.

4465021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4464983 and 4465001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4465031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18330 + ... + 18571.

Almost surely, 2^4465021 is an apocalyptic number.

It is an amenable number.

4465021 is a deficient number, since it is larger than the sum of its proper divisors (442945).

4465021 is a wasteful number, since it uses less digits than its factorization.

4465021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36923 (or 36912 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4465021 is about 2113.0596300152. The cubic root of 4465021 is about 164.6674784737.

The spelling of 4465021 in words is "four million, four hundred sixty-five thousand, twenty-one".