4840400408281 has 9 divisors (see below), whose sum is σ = 4851220348191. Its totient is φ = 4829604561744.

The previous prime is 4840400408269. The next prime is 4840400408287. The reversal of 4840400408281 is 1828040040484.

The square root of 4840400408281 is 2200091.

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

It can be written as a sum of positive squares in only one way, i.e., 363960030681 + 4476440377600 = 603291^2 + 2115760^2 .

It is not a de Polignac number, because 4840400408281 - 2³³ = 4831810473689 is a prime.

It is a super-2 number, since 2×4840400408281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4840400408287) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1097843205 + ... + 1097847613.

Almost surely, 2^{4840400408281} is an apocalyptic number.

4840400408281 is the 2200091-st square number.

4840400408281 is the 1100046-th centered octagonal number.

It is an amenable number.

4840400408281 is a deficient number, since it is larger than the sum of its proper divisors (10819939910).

4840400408281 is an frugal number, since it uses more digits than its factorization.

4840400408281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9816 (or 4908 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 43.

It can be divided in two parts, 4840400 and 408281, that added together give a square (5248681 = 2291²).

The spelling of 4840400408281 in words is "four trillion, eight hundred forty billion, four hundred million, four hundred eight thousand, two hundred eighty-one".