3927862961 has 4 divisors (see below), whose sum is σ = 4284941424. Its totient is φ = 3570784500.

The previous prime is 3927862933. The next prime is 3927862963. The reversal of 3927862961 is 1692687293.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1692687293 = 11 ⋅153880663.

It is a cyclic number.

It is not a de Polignac number, because 3927862961 - 2¹⁰ = 3927861937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3927862963) 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, 178539215 + ... + 178539236.

It is an arithmetic number, because the mean of its divisors is an integer number (1071235356).

Almost surely, 2^3927862961 is an apocalyptic number.

It is an amenable number.

3927862961 is a deficient number, since it is larger than the sum of its proper divisors (357078463).

3927862961 is a wasteful number, since it uses less digits than its factorization.

3927862961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357078462.

The product of its digits is 1959552, while the sum is 53.

The square root of 3927862961 is about 62672.6651818797. The cubic root of 3927862961 is about 1577.8005717517.

The spelling of 3927862961 in words is "three billion, nine hundred twenty-seven million, eight hundred sixty-two thousand, nine hundred sixty-one".