4387057221 has 8 divisors (see below), whose sum is σ = 5973865344. Its totient is φ = 2862476960.

The previous prime is 4387057219. The next prime is 4387057229. The reversal of 4387057221 is 1227507834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4387057221 - 2¹ = 4387057219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4387057221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4387057229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15556800 + ... + 15557081.

It is an arithmetic number, because the mean of its divisors is an integer number (746733168).

Almost surely, 2^4387057221 is an apocalyptic number.

It is an amenable number.

4387057221 is a deficient number, since it is larger than the sum of its proper divisors (1586808123).

4387057221 is a wasteful number, since it uses less digits than its factorization.

4387057221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31113931.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 4387057221 is about 66234.8640898432. The cubic root of 4387057221 is about 1637.0342519869.

The spelling of 4387057221 in words is "four billion, three hundred eighty-seven million, fifty-seven thousand, two hundred twenty-one".