4248438457 has 8 divisors (see below), whose sum is σ = 4382323400. Its totient is φ = 4115556864.

The previous prime is 4248438419. The next prime is 4248438487. The reversal of 4248438457 is 7548348424.

4248438457 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2317363321 + 1931075136 = 48139^2 + 43944^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4248438457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4248438457.

It is not an unprimeable number, because it can be changed into a prime (4248438487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242232 + ... + 259177.

It is an arithmetic number, because the mean of its divisors is an integer number (547790425).

Almost surely, 2^4248438457 is an apocalyptic number.

It is an amenable number.

4248438457 is a deficient number, since it is larger than the sum of its proper divisors (133884943).

4248438457 is a wasteful number, since it uses less digits than its factorization.

4248438457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501675.

The product of its digits is 3440640, while the sum is 49.

The square root of 4248438457 is about 65180.0464636226. The cubic root of 4248438457 is about 1619.6074922925.

The spelling of 4248438457 in words is "four billion, two hundred forty-eight million, four hundred thirty-eight thousand, four hundred fifty-seven".