4421690 has 64 divisors (see below), whose sum is σ = 10112256. Its totient is φ = 1354752.

The previous prime is 4421689. The next prime is 4421693. The reversal of 4421690 is 961244.

It is a super-2 number, since 2×4421690² = 39102684912200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4421693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39074 + ... + 39186.

It is an arithmetic number, because the mean of its divisors is an integer number (158004).

Almost surely, 2^4421690 is an apocalyptic number.

4421690 is an abundant number, since it is smaller than the sum of its proper divisors (5690566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4421690 is a wasteful number, since it uses less digits than its factorization.

4421690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4421690 is about 2102.7814912634. The cubic root of 4421690 is about 164.1330716498.

The spelling of 4421690 in words is "four million, four hundred twenty-one thousand, six hundred ninety".