105028639 has 2 divisors, whose sum is σ = 105028640. Its totient is φ = 105028638.

The previous prime is 105028631. The next prime is 105028657. The reversal of 105028639 is 936820501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105028639 - 2³ = 105028631 is a prime.

It is a super-2 number, since 2×105028639² = 22062030020384642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105028631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52514319 + 52514320.

It is an arithmetic number, because the mean of its divisors is an integer number (52514320).

Almost surely, 2^105028639 is an apocalyptic number.

105028639 is a deficient number, since it is larger than the sum of its proper divisors (1).

105028639 is an equidigital number, since it uses as much as digits as its factorization.

105028639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 105028639 is about 10248.3481107933. The cubic root of 105028639 is about 471.8122862081.

The spelling of 105028639 in words is "one hundred five million, twenty-eight thousand, six hundred thirty-nine".