4640487289 has 4 divisors (see below), whose sum is σ = 4650822900. Its totient is φ = 4630151680.

The previous prime is 4640487251. The next prime is 4640487311. The reversal of 4640487289 is 9827840464.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1862354025 + 2778133264 = 43155^2 + 52708^2 .

It is a cyclic number.

It is not a de Polignac number, because 4640487289 - 2⁹ = 4640486777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4640487389) 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, 5167132 + ... + 5168029.

It is an arithmetic number, because the mean of its divisors is an integer number (1162705725).

Almost surely, 2^4640487289 is an apocalyptic number.

It is an amenable number.

4640487289 is a deficient number, since it is larger than the sum of its proper divisors (10335611).

4640487289 is a wasteful number, since it uses less digits than its factorization.

4640487289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10335610.

The product of its (nonzero) digits is 3096576, while the sum is 52.

The square root of 4640487289 is about 68121.1221942211. The cubic root of 4640487289 is about 1667.9685685572.

The spelling of 4640487289 in words is "four billion, six hundred forty million, four hundred eighty-seven thousand, two hundred eighty-nine".