3506889961 has 3 divisors (see below), whose sum is σ = 3506949181. Its totient is φ = 3506830742.

The previous prime is 3506889943. The next prime is 3506889977. The reversal of 3506889961 is 1699886053.

It is a happy number.

The square root of 3506889961 is 59219.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 3506889961 - 2⁵ = 3506889929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3506889901) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 29610 + ... + 88828.

Almost surely, 2^3506889961 is an apocalyptic number.

3506889961 is the 59219-th square number.

3506889961 is the 29610-th centered octagonal number.

It is an amenable number.

3506889961 is a deficient number, since it is larger than the sum of its proper divisors (59220).

3506889961 is an frugal number, since it uses more digits than its factorization.

3506889961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118438 (or 59219 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The cubic root of 3506889961 is about 1519.2901176453.

The spelling of 3506889961 in words is "three billion, five hundred six million, eight hundred eighty-nine thousand, nine hundred sixty-one".