3987545340 has 48 divisors (see below), whose sum is σ = 11172446208. Its totient is φ = 1062648384.

The previous prime is 3987545321. The next prime is 3987545369. The reversal of 3987545340 is 435457893.

It is a self number, because there is not a number n which added to its sum of digits gives 3987545340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73989 + ... + 115971.

It is an arithmetic number, because the mean of its divisors is an integer number (232759296).

Almost surely, 2^3987545340 is an apocalyptic number.

3987545340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3987545340 is an abundant number, since it is smaller than the sum of its proper divisors (7184900868).

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

3987545340 is a wasteful number, since it uses less digits than its factorization.

3987545340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43578 (or 43576 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 48.

The square root of 3987545340 is about 63147.0137061128. The cubic root of 3987545340 is about 1585.7517940042.

The spelling of 3987545340 in words is "three billion, nine hundred eighty-seven million, five hundred forty-five thousand, three hundred forty".