109898421 has 8 divisors (see below), whose sum is σ = 155150784. Its totient is φ = 68955840.

The previous prime is 109898419. The next prime is 109898443. The reversal of 109898421 is 124898901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109898421 - 2¹ = 109898419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109898021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077385 + ... + 1077486.

It is an arithmetic number, because the mean of its divisors is an integer number (19393848).

Almost surely, 2^109898421 is an apocalyptic number.

It is an amenable number.

109898421 is a deficient number, since it is larger than the sum of its proper divisors (45252363).

109898421 is a wasteful number, since it uses less digits than its factorization.

109898421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154891.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 109898421 is about 10483.2447744007. The cubic root of 109898421 is about 478.9944531213.

The spelling of 109898421 in words is "one hundred nine million, eight hundred ninety-eight thousand, four hundred twenty-one".