4640440477 has 2 divisors, whose sum is σ = 4640440478. Its totient is φ = 4640440476.

The previous prime is 4640440457. The next prime is 4640440501. The reversal of 4640440477 is 7740440464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4636384281 + 4056196 = 68091^2 + 2014^2 .

It is a cyclic number.

It is not a de Polignac number, because 4640440477 - 2¹⁹ = 4639916189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4640440457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2320220238 + 2320220239.

It is an arithmetic number, because the mean of its divisors is an integer number (2320220239).

Almost surely, 2^4640440477 is an apocalyptic number.

It is an amenable number.

4640440477 is a deficient number, since it is larger than the sum of its proper divisors (1).

4640440477 is an equidigital number, since it uses as much as digits as its factorization.

4640440477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 301056, while the sum is 40.

The square root of 4640440477 is about 68120.7785994846. The cubic root of 4640440477 is about 1667.9629598641.

The spelling of 4640440477 in words is "four billion, six hundred forty million, four hundred forty thousand, four hundred seventy-seven".