103898405 has 16 divisors (see below), whose sum is σ = 137900784. Its totient is φ = 74649600.

The previous prime is 103898359. The next prime is 103898411. The reversal of 103898405 is 504898301.

It can be written as a sum of positive squares in 8 ways, for example, as 388129 + 103510276 = 623^2 + 10174^2 .

It is not a de Polignac number, because 103898405 - 2¹² = 103894309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 19196 + ... + 24005.

It is an arithmetic number, because the mean of its divisors is an integer number (8618799).

Almost surely, 2^103898405 is an apocalyptic number.

It is an amenable number.

103898405 is a deficient number, since it is larger than the sum of its proper divisors (34002379).

103898405 is a wasteful number, since it uses less digits than its factorization.

103898405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43256.

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

The square root of 103898405 is about 10193.0567054245. The cubic root of 103898405 is about 470.1137569824.

The spelling of 103898405 in words is "one hundred three million, eight hundred ninety-eight thousand, four hundred five".