4421669028 has 24 divisors (see below), whose sum is σ = 11791117632. Its totient is φ = 1263333984.

The previous prime is 4421669023. The next prime is 4421669033. The reversal of 4421669028 is 8209661244.

It is an interprime number because it is at equal distance from previous prime (4421669023) and next prime (4421669033).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (4421669023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26319375 + ... + 26319542.

It is an arithmetic number, because the mean of its divisors is an integer number (491296568).

Almost surely, 2^4421669028 is an apocalyptic number.

It is an amenable number.

4421669028 is an abundant number, since it is smaller than the sum of its proper divisors (7369448604).

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

4421669028 is a wasteful number, since it uses less digits than its factorization.

4421669028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52638931 (or 52638929 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 4421669028 is about 66495.6316459961. The cubic root of 4421669028 is about 1641.3281215590.

The spelling of 4421669028 in words is "four billion, four hundred twenty-one million, six hundred sixty-nine thousand, twenty-eight".