84480401 has 2 divisors, whose sum is σ = 84480402. Its totient is φ = 84480400.

The previous prime is 84480379. The next prime is 84480419. The reversal of 84480401 is 10408448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83740801 + 739600 = 9151^2 + 860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84480401 is a prime.

It is not a weakly prime, because it can be changed into another prime (84480421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42240200 + 42240201.

It is an arithmetic number, because the mean of its divisors is an integer number (42240201).

Almost surely, 2^84480401 is an apocalyptic number.

It is an amenable number.

84480401 is a deficient number, since it is larger than the sum of its proper divisors (1).

84480401 is an equidigital number, since it uses as much as digits as its factorization.

84480401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 84480401 is about 9191.3220485412. The cubic root of 84480401 is about 438.7852184509.

Adding to 84480401 its reverse (10408448), we get a palindrome (94888849).

The spelling of 84480401 in words is "eighty-four million, four hundred eighty thousand, four hundred one".