8639401 has 2 divisors, whose sum is σ = 8639402. Its totient is φ = 8639400.

The previous prime is 8639381. The next prime is 8639413. The reversal of 8639401 is 1049368.

8639401 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 602176 = 2835^2 + 776^2 .

It is a cyclic number.

It is not a de Polignac number, because 8639401 - 2⁷ = 8639273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8639441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4319700 + 4319701.

It is an arithmetic number, because the mean of its divisors is an integer number (4319701).

Almost surely, 2^8639401 is an apocalyptic number.

It is an amenable number.

8639401 is a deficient number, since it is larger than the sum of its proper divisors (1).

8639401 is an equidigital number, since it uses as much as digits as its factorization.

8639401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 8639401 is about 2939.2857976046. The cubic root of 8639401 is about 205.1923714750.

The spelling of 8639401 in words is "eight million, six hundred thirty-nine thousand, four hundred one".