3639143 has 2 divisors, whose sum is σ = 3639144. Its totient is φ = 3639142.

The previous prime is 3639109. The next prime is 3639151. The reversal of 3639143 is 3419363.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3639143 - 2⁶ = 3639079 is a prime.

It is equal to p₂₅₉₃₆₄ and since 3639143 and 259364 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3639193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819571 + 1819572.

It is an arithmetic number, because the mean of its divisors is an integer number (1819572).

Almost surely, 2^3639143 is an apocalyptic number.

3639143 is a deficient number, since it is larger than the sum of its proper divisors (1).

3639143 is an equidigital number, since it uses as much as digits as its factorization.

3639143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 29.

The square root of 3639143 is about 1907.6537945864. The cubic root of 3639143 is about 153.8153603176.

The spelling of 3639143 in words is "three million, six hundred thirty-nine thousand, one hundred forty-three".