4638240247 has 4 divisors (see below), whose sum is σ = 4638596760. Its totient is φ = 4637883736.

The previous prime is 4638240239. The next prime is 4638240253. The reversal of 4638240247 is 7420428364.

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 4638240247 - 2³ = 4638240239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638240287) 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, 157972 + ... + 185017.

It is an arithmetic number, because the mean of its divisors is an integer number (1159649190).

Almost surely, 2^4638240247 is an apocalyptic number.

4638240247 is a deficient number, since it is larger than the sum of its proper divisors (356513).

4638240247 is a wasteful number, since it uses less digits than its factorization.

4638240247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356512.

The product of its (nonzero) digits is 258048, while the sum is 40.

The square root of 4638240247 is about 68104.6272069674. The cubic root of 4638240247 is about 1667.6993008190.

The spelling of 4638240247 in words is "four billion, six hundred thirty-eight million, two hundred forty thousand, two hundred forty-seven".