103898821 has 16 divisors (see below), whose sum is σ = 118148800. Its totient is φ = 90574848.

The previous prime is 103898813. The next prime is 103898833. The reversal of 103898821 is 128898301.

It is not a de Polignac number, because 103898821 - 2³ = 103898813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103895821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134725 + ... + 135493.

It is an arithmetic number, because the mean of its divisors is an integer number (7384300).

Almost surely, 2^103898821 is an apocalyptic number.

It is an amenable number.

103898821 is a deficient number, since it is larger than the sum of its proper divisors (14249979).

103898821 is a wasteful number, since it uses less digits than its factorization.

103898821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 103898821 is about 10193.0771114517. The cubic root of 103898821 is about 470.1143844128.

The spelling of 103898821 in words is "one hundred three million, eight hundred ninety-eight thousand, eight hundred twenty-one".