4640400043 has 2 divisors, whose sum is σ = 4640400044. Its totient is φ = 4640400042.

The previous prime is 4640399971. The next prime is 4640400067. The reversal of 4640400043 is 3400040464.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4640400043 - 2⁹ = 4640399531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4640399990 and 4640400017.

It is not a weakly prime, because it can be changed into another prime (4640400073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2320200021 + 2320200022.

It is an arithmetic number, because the mean of its divisors is an integer number (2320200022).

Almost surely, 2^4640400043 is an apocalyptic number.

4640400043 is a deficient number, since it is larger than the sum of its proper divisors (1).

4640400043 is an equidigital number, since it uses as much as digits as its factorization.

4640400043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 4640400043 is about 68120.4818171451. The cubic root of 4640400043 is about 1667.9581153089.

The spelling of 4640400043 in words is "four billion, six hundred forty million, four hundred thousand, forty-three".