3976499966 has 4 divisors (see below), whose sum is σ = 5964749952. Its totient is φ = 1988249982.

The previous prime is 3976499951. The next prime is 3976500007. The reversal of 3976499966 is 6699946793.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 3976499896 and 3976499905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994124990 + ... + 994124993.

It is an arithmetic number, because the mean of its divisors is an integer number (1491187488).

Almost surely, 2^3976499966 is an apocalyptic number.

3976499966 is a deficient number, since it is larger than the sum of its proper divisors (1988249986).

3976499966 is a wasteful number, since it uses less digits than its factorization.

3976499966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988249985.

The product of its digits is 119042784, while the sum is 68.

The square root of 3976499966 is about 63059.4954467604. The cubic root of 3976499966 is about 1584.2862793181.

The spelling of 3976499966 in words is "three billion, nine hundred seventy-six million, four hundred ninety-nine thousand, nine hundred sixty-six".