4446621 has 6 divisors (see below), whose sum is σ = 6422910. Its totient is φ = 2964408.

The previous prime is 4446601. The next prime is 4446641. The reversal of 4446621 is 1266444.

It is an interprime number because it is at equal distance from previous prime (4446601) and next prime (4446641).

It can be written as a sum of positive squares in only one way, i.e., 3663396 + 783225 = 1914^2 + 885^2 .

It is not a de Polignac number, because 4446621 - 2¹⁵ = 4413853 is a prime.

It is a super-3 number, since 3×4446621³ (a number of 21 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4446601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 247026 + ... + 247043.

It is an arithmetic number, because the mean of its divisors is an integer number (1070485).

Almost surely, 2^4446621 is an apocalyptic number.

It is an amenable number.

4446621 is a deficient number, since it is larger than the sum of its proper divisors (1976289).

4446621 is a wasteful number, since it uses less digits than its factorization.

4446621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494075 (or 494072 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 4446621 is about 2108.7012590692. The cubic root of 4446621 is about 164.4409731466.

It can be divided in two parts, 44 and 46621, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 4446621 in words is "four million, four hundred forty-six thousand, six hundred twenty-one".