3976500009 has 4 divisors (see below), whose sum is σ = 5302000016. Its totient is φ = 2651000004.

The previous prime is 3976500007. The next prime is 3976500013. The reversal of 3976500009 is 9000056793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3976500009 - 2¹ = 3976500007 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3976500009.

It is not an unprimeable number, because it can be changed into a prime (3976500007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662749999 + ... + 662750004.

It is an arithmetic number, because the mean of its divisors is an integer number (1325500004).

Almost surely, 2^3976500009 is an apocalyptic number.

It is an amenable number.

3976500009 is a deficient number, since it is larger than the sum of its proper divisors (1325500007).

3976500009 is a wasteful number, since it uses less digits than its factorization.

3976500009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325500006.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 3976500009 is about 63059.4957877083. The cubic root of 3976500009 is about 1584.2862850287.

The spelling of 3976500009 in words is "three billion, nine hundred seventy-six million, five hundred thousand, nine".