8400481 has 2 divisors, whose sum is σ = 8400482. Its totient is φ = 8400480.

The previous prime is 8400461. The next prime is 8400529. The reversal of 8400481 is 1840048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6553600 + 1846881 = 2560^2 + 1359^2 .

It is a cyclic number.

It is not a de Polignac number, because 8400481 - 2¹⁷ = 8269409 is a prime.

It is a super-2 number, since 2×8400481² = 141136162062722, which contains 22 as substring.

It is equal to p₅₆₄₉₁₀ and since 8400481 and 564910 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (8400461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200240 + 4200241.

It is an arithmetic number, because the mean of its divisors is an integer number (4200241).

Almost surely, 2^8400481 is an apocalyptic number.

It is an amenable number.

8400481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8400481 is an equidigital number, since it uses as much as digits as its factorization.

8400481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 8400481 is about 2898.3583284335. The cubic root of 8400481 is about 203.2831513417.

The spelling of 8400481 in words is "eight million, four hundred thousand, four hundred eighty-one".