3866239125 has 48 divisors (see below), whose sum is σ = 7965205248. Its totient is φ = 1767420000.

The previous prime is 3866239103. The next prime is 3866239151. The reversal of 3866239125 is 5219326683.

3866239125 is a `hidden beast` number, since 3 + 8 + 6 + 623 + 9 + 12 + 5 = 666.

It is not a de Polignac number, because 3866239125 - 2⁶ = 3866239061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 237601 + ... + 253350.

It is an arithmetic number, because the mean of its divisors is an integer number (165941776).

Almost surely, 2^3866239125 is an apocalyptic number.

3866239125 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3866239125 is an abundant number, since it is smaller than the sum of its proper divisors (4098966123).

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

3866239125 is a wasteful number, since it uses less digits than its factorization.

3866239125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490979 (or 490966 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 3866239125 is about 62179.0891297066. The cubic root of 3866239125 is about 1569.5057236162.

The spelling of 3866239125 in words is "three billion, eight hundred sixty-six million, two hundred thirty-nine thousand, one hundred twenty-five".