248056790809 has 3 divisors (see below), whose sum is σ = 248057288863. Its totient is φ = 248056292756.

The previous prime is 248056790797. The next prime is 248056790881. The reversal of 248056790809 is 908097650842.

The square root of 248056790809 is 498053.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 240457833225 + 7598957584 = 490365^2 + 87172^2 .

It is not a de Polignac number, because 248056790809 - 2⁵ = 248056790777 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248056790609) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 249027 + ... + 747079.

Almost surely, 2^248056790809 is an apocalyptic number.

248056790809 is the 498053-rd square number.

248056790809 is the 249027-th centered octagonal number.

It is an amenable number.

248056790809 is a deficient number, since it is larger than the sum of its proper divisors (498054).

248056790809 is an frugal number, since it uses more digits than its factorization.

248056790809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996106 (or 498053 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 248056790809 in words is "two hundred forty-eight billion, fifty-six million, seven hundred ninety thousand, eight hundred nine".