3864428285 has 4 divisors (see below), whose sum is σ = 4637313948. Its totient is φ = 3091542624.

The previous prime is 3864428261. The next prime is 3864428303. The reversal of 3864428285 is 5828244683.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1255568356 + 2608859929 = 35434^2 + 51077^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3864428285 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386442824 + ... + 386442833.

It is an arithmetic number, because the mean of its divisors is an integer number (1159328487).

Almost surely, 2^3864428285 is an apocalyptic number.

It is an amenable number.

3864428285 is a deficient number, since it is larger than the sum of its proper divisors (772885663).

3864428285 is an equidigital number, since it uses as much as digits as its factorization.

3864428285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772885662.

The product of its digits is 2949120, while the sum is 50.

The square root of 3864428285 is about 62164.5259372256. The cubic root of 3864428285 is about 1569.2606475882.

The spelling of 3864428285 in words is "three billion, eight hundred sixty-four million, four hundred twenty-eight thousand, two hundred eighty-five".