3947306477 has 8 divisors (see below), whose sum is σ = 4076674560. Its totient is φ = 3818065680.

The previous prime is 3947306453. The next prime is 3947306501. The reversal of 3947306477 is 7746037493.

It is an interprime number because it is at equal distance from previous prime (3947306453) and next prime (3947306501).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3947306477 - 2¹⁴ = 3947290093 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 (3947306417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33368 + ... + 94910.

It is an arithmetic number, because the mean of its divisors is an integer number (509584320).

Almost surely, 2^3947306477 is an apocalyptic number.

It is an amenable number.

3947306477 is a deficient number, since it is larger than the sum of its proper divisors (129368083).

3947306477 is a wasteful number, since it uses less digits than its factorization.

3947306477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63643.

The product of its (nonzero) digits is 2667168, while the sum is 50.

The square root of 3947306477 is about 62827.5932771581. The cubic root of 3947306477 is about 1580.3997382268.

The spelling of 3947306477 in words is "three billion, nine hundred forty-seven million, three hundred six thousand, four hundred seventy-seven".