3890664772 has 6 divisors (see below), whose sum is σ = 6808663358. Its totient is φ = 1945332384.

The previous prime is 3890664709. The next prime is 3890664773. The reversal of 3890664772 is 2774660983.

It can be written as a sum of positive squares in only one way, i.e., 3125257216 + 765407556 = 55904^2 + 27666^2 .

It is not an unprimeable number, because it can be changed into a prime (3890664773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486333093 + ... + 486333100.

Almost surely, 2^3890664772 is an apocalyptic number.

It is an amenable number.

3890664772 is a deficient number, since it is larger than the sum of its proper divisors (2917998586).

3890664772 is a wasteful number, since it uses less digits than its factorization.

3890664772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972666197 (or 972666195 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 52.

The square root of 3890664772 is about 62375.1935628259. The cubic root of 3890664772 is about 1572.8039971937.

The spelling of 3890664772 in words is "three billion, eight hundred ninety million, six hundred sixty-four thousand, seven hundred seventy-two".