949406561 has 4 divisors (see below), whose sum is σ = 952096452. Its totient is φ = 946716672.

The previous prime is 949406509. The next prime is 949406587. The reversal of 949406561 is 165604949.

949406561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165604949 = 601 ⋅275549.

It can be written as a sum of positive squares in 2 ways, for example, as 184552225 + 764854336 = 13585^2 + 27656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-949406561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (949406461) 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, 1344416 + ... + 1345121.

It is an arithmetic number, because the mean of its divisors is an integer number (238024113).

Almost surely, 2^949406561 is an apocalyptic number.

It is an amenable number.

949406561 is a deficient number, since it is larger than the sum of its proper divisors (2689891).

949406561 is a wasteful number, since it uses less digits than its factorization.

949406561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689890.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 949406561 is about 30812.4416591740. The cubic root of 949406561 is about 982.8428355498.

The spelling of 949406561 in words is "nine hundred forty-nine million, four hundred six thousand, five hundred sixty-one".