4428021487 has 2 divisors, whose sum is σ = 4428021488. Its totient is φ = 4428021486.

The previous prime is 4428021473. The next prime is 4428021511. The reversal of 4428021487 is 7841208244.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4428021487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4428021407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2214010743 + 2214010744.

It is an arithmetic number, because the mean of its divisors is an integer number (2214010744).

Almost surely, 2^4428021487 is an apocalyptic number.

4428021487 is a deficient number, since it is larger than the sum of its proper divisors (1).

4428021487 is an equidigital number, since it uses as much as digits as its factorization.

4428021487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 114688, while the sum is 40.

The square root of 4428021487 is about 66543.3804897226. The cubic root of 4428021487 is about 1642.1137585660.

The spelling of 4428021487 in words is "four billion, four hundred twenty-eight million, twenty-one thousand, four hundred eighty-seven".