3561979 has 4 divisors (see below), whose sum is σ = 3578176. Its totient is φ = 3545784.

The previous prime is 3561977. The next prime is 3561997. The reversal of 3561979 is 9791653.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3561979 - 2¹ = 3561977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3561977) 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, 7764 + ... + 8209.

It is an arithmetic number, because the mean of its divisors is an integer number (894544).

Almost surely, 2^3561979 is an apocalyptic number.

3561979 is a deficient number, since it is larger than the sum of its proper divisors (16197).

3561979 is a wasteful number, since it uses less digits than its factorization.

3561979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16196.

The product of its digits is 51030, while the sum is 40.

The square root of 3561979 is about 1887.3205874996. The cubic root of 3561979 is about 152.7204229840.

The spelling of 3561979 in words is "three million, five hundred sixty-one thousand, nine hundred seventy-nine".