4640243 has 4 divisors (see below), whose sum is σ = 4686288. Its totient is φ = 4594200.

The previous prime is 4640231. The next prime is 4640249. The reversal of 4640243 is 3420464.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4640243 - 2⁶ = 4640179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4640249) 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, 22871 + ... + 23072.

It is an arithmetic number, because the mean of its divisors is an integer number (1171572).

Almost surely, 2^4640243 is an apocalyptic number.

4640243 is a deficient number, since it is larger than the sum of its proper divisors (46045).

4640243 is a wasteful number, since it uses less digits than its factorization.

4640243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46044.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 4640243 is about 2154.1223270743. The cubic root of 4640243 is about 166.7939299108.

The spelling of 4640243 in words is "four million, six hundred forty thousand, two hundred forty-three".