3976497128 has 8 divisors (see below), whose sum is σ = 7455932130. Its totient is φ = 1988248560.

The previous prime is 3976497121. The next prime is 3976497167. The reversal of 3976497128 is 8217946793.

It can be written as a sum of positive squares in only one way, i.e., 3919010404 + 57486724 = 62602^2 + 7582^2 .

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

It is a super-3 number, since 3×3976497128³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3976497121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248531063 + ... + 248531078.

Almost surely, 2^3976497128 is an apocalyptic number.

It is an amenable number.

3976497128 is a deficient number, since it is larger than the sum of its proper divisors (3479435002).

3976497128 is a wasteful number, since it uses less digits than its factorization.

3976497128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497062147 (or 497062143 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 56.

The square root of 3976497128 is about 63059.4729441977. The cubic root of 3976497128 is about 1584.2859024200.

The spelling of 3976497128 in words is "three billion, nine hundred seventy-six million, four hundred ninety-seven thousand, one hundred twenty-eight".