103988405 has 32 divisors (see below), whose sum is σ = 141191424. Its totient is φ = 73092096.

The previous prime is 103988383. The next prime is 103988407. The reversal of 103988405 is 504889301.

It is a cyclic number.

It is not a de Polignac number, because 103988405 - 2¹⁴ = 103972021 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103988407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83447 + ... + 84683.

It is an arithmetic number, because the mean of its divisors is an integer number (4412232).

Almost surely, 2^103988405 is an apocalyptic number.

It is an amenable number.

103988405 is a deficient number, since it is larger than the sum of its proper divisors (37203019).

103988405 is a wasteful number, since it uses less digits than its factorization.

103988405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 103988405 is about 10197.4705196926. The cubic root of 103988405 is about 470.2494601474.

The spelling of 103988405 in words is "one hundred three million, nine hundred eighty-eight thousand, four hundred five".