3967970806 has 4 divisors (see below), whose sum is σ = 5951956212. Its totient is φ = 1983985402.

The previous prime is 3967970803. The next prime is 3967970819. The reversal of 3967970806 is 6080797693.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967970803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991992700 + ... + 991992703.

It is an arithmetic number, because the mean of its divisors is an integer number (1487989053).

Almost surely, 2^3967970806 is an apocalyptic number.

3967970806 is a deficient number, since it is larger than the sum of its proper divisors (1983985406).

3967970806 is a wasteful number, since it uses less digits than its factorization.

3967970806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983985405.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The square root of 3967970806 is about 62991.8312640615. The cubic root of 3967970806 is about 1583.1527612454.

The spelling of 3967970806 in words is "three billion, nine hundred sixty-seven million, nine hundred seventy thousand, eight hundred six".