4221388 has 6 divisors (see below), whose sum is σ = 7387436. Its totient is φ = 2110692.

The previous prime is 4221379. The next prime is 4221407. The reversal of 4221388 is 8831224.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527670 + ... + 527677.

Almost surely, 2^4221388 is an apocalyptic number.

It is an amenable number.

4221388 is a deficient number, since it is larger than the sum of its proper divisors (3166048).

4221388 is a wasteful number, since it uses less digits than its factorization.

4221388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055351 (or 1055349 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 4221388 is about 2054.6016645569. The cubic root of 4221388 is about 161.6162741347.

The spelling of 4221388 in words is "four million, two hundred twenty-one thousand, three hundred eighty-eight".