103951639 has 16 divisors (see below), whose sum is σ = 117582336. Its totient is φ = 91080000.

The previous prime is 103951637. The next prime is 103951643. The reversal of 103951639 is 936159301.

It is not a de Polignac number, because 103951639 - 2¹ = 103951637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103951598 and 103951607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103951633) 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 in 15 ways as a sum of consecutive naturals, for example, 33139 + ... + 36139.

It is an arithmetic number, because the mean of its divisors is an integer number (7348896).

Almost surely, 2^103951639 is an apocalyptic number.

103951639 is a deficient number, since it is larger than the sum of its proper divisors (13630697).

103951639 is a wasteful number, since it uses less digits than its factorization.

103951639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 103951639 is about 10195.6676583733. The cubic root of 103951639 is about 470.1940333600.

The spelling of 103951639 in words is "one hundred three million, nine hundred fifty-one thousand, six hundred thirty-nine".