3987447266 has 16 divisors (see below), whose sum is σ = 6545508480. Its totient is φ = 1806755280.

The previous prime is 3987447193. The next prime is 3987447271. The reversal of 3987447266 is 6627447893.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278906 + ... + 292853.

It is an arithmetic number, because the mean of its divisors is an integer number (409094280).

Almost surely, 2^3987447266 is an apocalyptic number.

3987447266 is a deficient number, since it is larger than the sum of its proper divisors (2558061214).

3987447266 is a wasteful number, since it uses less digits than its factorization.

3987447266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572089.

The product of its digits is 12192768, while the sum is 56.

The square root of 3987447266 is about 63146.2371483844. The cubic root of 3987447266 is about 1585.7387933331.

The spelling of 3987447266 in words is "three billion, nine hundred eighty-seven million, four hundred forty-seven thousand, two hundred sixty-six".