8490401 has 2 divisors, whose sum is σ = 8490402. Its totient is φ = 8490400.

The previous prime is 8490389. The next prime is 8490413. The reversal of 8490401 is 1040948.

It is a balanced prime because it is at equal distance from previous prime (8490389) and next prime (8490413).

It can be written as a sum of positive squares in only one way, i.e., 4494400 + 3996001 = 2120^2 + 1999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8490401 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8490421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4245200 + 4245201.

It is an arithmetic number, because the mean of its divisors is an integer number (4245201).

Almost surely, 2^8490401 is an apocalyptic number.

It is an amenable number.

8490401 is a deficient number, since it is larger than the sum of its proper divisors (1).

8490401 is an equidigital number, since it uses as much as digits as its factorization.

8490401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 8490401 is about 2913.8292674760. The cubic root of 8490401 is about 204.0059030075.

The spelling of 8490401 in words is "eight million, four hundred ninety thousand, four hundred one".