3947201066 has 16 divisors (see below), whose sum is σ = 6274537344. Its totient is φ = 1855890624.

The previous prime is 3947200973. The next prime is 3947201147. The reversal of 3947201066 is 6601027493.

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, 10370 + ... + 89453.

It is an arithmetic number, because the mean of its divisors is an integer number (392158584).

Almost surely, 2^3947201066 is an apocalyptic number.

3947201066 is a deficient number, since it is larger than the sum of its proper divisors (2327336278).

3947201066 is a wasteful number, since it uses less digits than its factorization.

3947201066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101005.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 3947201066 is about 62826.7543805981. The cubic root of 3947201066 is about 1580.3856701528.

The spelling of 3947201066 in words is "three billion, nine hundred forty-seven million, two hundred one thousand, sixty-six".