4640089261 has 4 divisors (see below), whose sum is σ = 4640225500. Its totient is φ = 4639953024.

The previous prime is 4640089249. The next prime is 4640089271. The reversal of 4640089261 is 1629800464.

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 can be written as a sum of positive squares in 2 ways, for example, as 2285413636 + 2354675625 = 47806^2 + 48525^2 .

It is a cyclic number.

It is not a de Polignac number, because 4640089261 - 2²⁷ = 4505871533 is a prime.

It is a super-2 number, since 2×4640089261² = 43060856700095052242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640089231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33565 + ... + 102013.

It is an arithmetic number, because the mean of its divisors is an integer number (1160056375).

Almost surely, 2^4640089261 is an apocalyptic number.

It is an amenable number.

4640089261 is a deficient number, since it is larger than the sum of its proper divisors (136239).

4640089261 is an equidigital number, since it uses as much as digits as its factorization.

4640089261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136238.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 4640089261 is about 68118.2006588548. The cubic root of 4640089261 is about 1667.9208783662.

The spelling of 4640089261 in words is "four billion, six hundred forty million, eighty-nine thousand, two hundred sixty-one".