8402881 has 4 divisors (see below), whose sum is σ = 8410564. Its totient is φ = 8395200.

The previous prime is 8402861. The next prime is 8402917. The reversal of 8402881 is 1882048.

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 2 ways, for example, as 5216656 + 3186225 = 2284^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 8402881 - 2¹³ = 8394689 is a prime.

It is a super-2 number, since 2×8402881² = 141216818200322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8402831) 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, 1860 + ... + 4501.

It is an arithmetic number, because the mean of its divisors is an integer number (2102641).

Almost surely, 2^8402881 is an apocalyptic number.

It is an amenable number.

8402881 is a deficient number, since it is larger than the sum of its proper divisors (7683).

8402881 is a wasteful number, since it uses less digits than its factorization.

8402881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682.

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 8402881 is about 2898.7723263478. The cubic root of 8402881 is about 203.3025086899.

It can be divided in two parts, 840 and 2881, that added together give a square (3721 = 61²).

The spelling of 8402881 in words is "eight million, four hundred two thousand, eight hundred eighty-one".