3970666477 has 4 divisors (see below), whose sum is σ = 3971242080. Its totient is φ = 3970090876.

The previous prime is 3970666459. The next prime is 3970666481. The reversal of 3970666477 is 7746660793.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3970666477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3970666277) 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, 277327 + ... + 291292.

It is an arithmetic number, because the mean of its divisors is an integer number (992810520).

Almost surely, 2^3970666477 is an apocalyptic number.

It is an amenable number.

3970666477 is a deficient number, since it is larger than the sum of its proper divisors (575603).

3970666477 is an equidigital number, since it uses as much as digits as its factorization.

3970666477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575602.

The product of its (nonzero) digits is 8001504, while the sum is 55.

The square root of 3970666477 is about 63013.2246199161. The cubic root of 3970666477 is about 1583.5111890278.

The spelling of 3970666477 in words is "three billion, nine hundred seventy million, six hundred sixty-six thousand, four hundred seventy-seven".