3945273208 has 8 divisors (see below), whose sum is σ = 7397387280. Its totient is φ = 1972636600.

The previous prime is 3945273197. The next prime is 3945273217. The reversal of 3945273208 is 8023725493.

3945273208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×3945273208² = 31130361371525222528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246579568 + ... + 246579583.

It is an arithmetic number, because the mean of its divisors is an integer number (924673410).

Almost surely, 2^3945273208 is an apocalyptic number.

It is an amenable number.

3945273208 is a deficient number, since it is larger than the sum of its proper divisors (3452114072).

3945273208 is a wasteful number, since it uses less digits than its factorization.

3945273208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493159157 (or 493159153 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 3945273208 is about 62811.4098552166. The cubic root of 3945273208 is about 1580.1283354604.

The spelling of 3945273208 in words is "three billion, nine hundred forty-five million, two hundred seventy-three thousand, two hundred eight".