101679439 has 2 divisors, whose sum is σ = 101679440. Its totient is φ = 101679438.

The previous prime is 101679433. The next prime is 101679491. The reversal of 101679439 is 934976101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101679439 - 2⁵ = 101679407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101679433) 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, 50839719 + 50839720.

It is an arithmetic number, because the mean of its divisors is an integer number (50839720).

Almost surely, 2^101679439 is an apocalyptic number.

101679439 is a deficient number, since it is larger than the sum of its proper divisors (1).

101679439 is an equidigital number, since it uses as much as digits as its factorization.

101679439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 101679439 is about 10083.6223154182. The cubic root of 101679439 is about 466.7428930472.

The spelling of 101679439 in words is "one hundred one million, six hundred seventy-nine thousand, four hundred thirty-nine".