101389865 has 16 divisors (see below), whose sum is σ = 127685376. Its totient is φ = 77140800.

The previous prime is 101389861. The next prime is 101389913. The reversal of 101389865 is 568983101.

It is not a de Polignac number, because 101389865 - 2² = 101389861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101389861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18380 + ... + 23250.

It is an arithmetic number, because the mean of its divisors is an integer number (7980336).

Almost surely, 2^101389865 is an apocalyptic number.

It is an amenable number.

101389865 is a deficient number, since it is larger than the sum of its proper divisors (26295511).

101389865 is a wasteful number, since it uses less digits than its factorization.

101389865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 101389865 is about 10069.2534479970. The cubic root of 101389865 is about 466.2993910115.

The spelling of 101389865 in words is "one hundred one million, three hundred eighty-nine thousand, eight hundred sixty-five".