103929391 has 6 divisors (see below), whose sum is σ = 107340576. Its totient is φ = 100521900.

The previous prime is 103929367. The next prime is 103929407. The reversal of 103929391 is 193929301.

It is not a de Polignac number, because 103929391 - 2¹⁵ = 103896623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103929391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103929491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55846 + ... + 57676.

It is an arithmetic number, because the mean of its divisors is an integer number (17890096).

Almost surely, 2^103929391 is an apocalyptic number.

103929391 is a deficient number, since it is larger than the sum of its proper divisors (3411185).

103929391 is an frugal number, since it uses more digits than its factorization.

103929391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693 (or 1862 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 103929391 is about 10194.5765483418. The cubic root of 103929391 is about 470.1604869169.

The spelling of 103929391 in words is "one hundred three million, nine hundred twenty-nine thousand, three hundred ninety-one".