4421516 has 18 divisors (see below), whose sum is σ = 8467788. Its totient is φ = 2003440.

The previous prime is 4421507. The next prime is 4421533. The reversal of 4421516 is 6151244.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4421491 and 4421500.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13790 + ... + 14106.

Almost surely, 2^4421516 is an apocalyptic number.

It is an amenable number.

4421516 is a deficient number, since it is larger than the sum of its proper divisors (4046272).

4421516 is a wasteful number, since it uses less digits than its factorization.

4421516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 330 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 4421516 is about 2102.7401170853. The cubic root of 4421516 is about 164.1309186623.

The spelling of 4421516 in words is "four million, four hundred twenty-one thousand, five hundred sixteen".