3854679961 has 4 divisors (see below), whose sum is σ = 4205105424. Its totient is φ = 3504254500.

The previous prime is 3854679953. The next prime is 3854679973. The reversal of 3854679961 is 1699764583.

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: 1699764583 = 11 ⋅154524053.

It is a cyclic number.

It is not a de Polignac number, because 3854679961 - 2³ = 3854679953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3854679896 and 3854679905.

It is not an unprimeable number, because it can be changed into a prime (3854679901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175212715 + ... + 175212736.

It is an arithmetic number, because the mean of its divisors is an integer number (1051276356).

Almost surely, 2^3854679961 is an apocalyptic number.

It is an amenable number.

3854679961 is a deficient number, since it is larger than the sum of its proper divisors (350425463).

3854679961 is a wasteful number, since it uses less digits than its factorization.

3854679961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350425462.

The product of its digits is 9797760, while the sum is 58.

The square root of 3854679961 is about 62086.0689768647. The cubic root of 3854679961 is about 1567.9400087299.

The spelling of 3854679961 in words is "three billion, eight hundred fifty-four million, six hundred seventy-nine thousand, nine hundred sixty-one".