3866535400 has 96 divisors (see below), whose sum is σ = 11064291840. Its totient is φ = 1223688960.

The previous prime is 3866535389. The next prime is 3866535401. The reversal of 3866535400 is 45356683.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (3866535401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88024 + ... + 124423.

It is an arithmetic number, because the mean of its divisors is an integer number (115253040).

Almost surely, 2^3866535400 is an apocalyptic number.

It is an amenable number.

3866535400 is an abundant number, since it is smaller than the sum of its proper divisors (7197756440).

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

3866535400 is a wasteful number, since it uses less digits than its factorization.

3866535400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212483 (or 212474 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 3866535400 is about 62181.4715168433. The cubic root of 3866535400 is about 1569.5458136896.

The spelling of 3866535400 in words is "three billion, eight hundred sixty-six million, five hundred thirty-five thousand, four hundred".