3943961477 has 4 divisors (see below), whose sum is σ = 3993885120. Its totient is φ = 3894037836.

The previous prime is 3943961467. The next prime is 3943961507. The reversal of 3943961477 is 7741693493.

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 not a de Polignac number, because 3943961477 - 2¹⁰ = 3943960453 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 (3943961407) 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, 24961703 + ... + 24961860.

It is an arithmetic number, because the mean of its divisors is an integer number (998471280).

Almost surely, 2^3943961477 is an apocalyptic number.

It is an amenable number.

3943961477 is a deficient number, since it is larger than the sum of its proper divisors (49923643).

3943961477 is an equidigital number, since it uses as much as digits as its factorization.

3943961477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49923642.

The product of its digits is 3429216, while the sum is 53.

The square root of 3943961477 is about 62800.9671661193. The cubic root of 3943961477 is about 1579.9531948160.

The spelling of 3943961477 in words is "three billion, nine hundred forty-three million, nine hundred sixty-one thousand, four hundred seventy-seven".