3977489546 has 16 divisors (see below), whose sum is σ = 5998604040. Its totient is φ = 1977976320.

The previous prime is 3977489513. The next prime is 3977489561. The reversal of 3977489546 is 6459847793.

3977489546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3543225625 + 434263921 = 59525^2 + 20839^2 .

It is a super-2 number, since 2×3977489546² = 31640846177078572232, which contains 22 as substring.

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, 408260 + ... + 417888.

Almost surely, 2^3977489546 is an apocalyptic number.

3977489546 is a deficient number, since it is larger than the sum of its proper divisors (2021114494).

3977489546 is a wasteful number, since it uses less digits than its factorization.

3977489546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10729.

The product of its digits is 45722880, while the sum is 62.

The square root of 3977489546 is about 63067.3413582656. The cubic root of 3977489546 is about 1584.4176886812.

The spelling of 3977489546 in words is "three billion, nine hundred seventy-seven million, four hundred eighty-nine thousand, five hundred forty-six".