3884501989 has 4 divisors (see below), whose sum is σ = 4113002124. Its totient is φ = 3656001856.

The previous prime is 3884501857. The next prime is 3884502001. The reversal of 3884501989 is 9891054883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9891054883 = 227 ⋅43572929.

It can be written as a sum of positive squares in 2 ways, for example, as 3500733889 + 383768100 = 59167^2 + 19590^2 .

It is a cyclic number.

It is not a de Polignac number, because 3884501989 - 2¹³ = 3884493797 is a prime.

It is a super-2 number, since 2×3884501989² = 30178711405089912242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3884501389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114250042 + ... + 114250075.

It is an arithmetic number, because the mean of its divisors is an integer number (1028250531).

Almost surely, 2^3884501989 is an apocalyptic number.

It is an amenable number.

3884501989 is a deficient number, since it is larger than the sum of its proper divisors (228500135).

3884501989 is a wasteful number, since it uses less digits than its factorization.

3884501989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228500134.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The square root of 3884501989 is about 62325.7730718200. The cubic root of 3884501989 is about 1571.9731218710.

The spelling of 3884501989 in words is "three billion, eight hundred eighty-four million, five hundred one thousand, nine hundred eighty-nine".