109898840 has 32 divisors (see below), whose sum is σ = 248670000. Its totient is φ = 43711104.

The previous prime is 109898801. The next prime is 109898849. The reversal of 109898840 is 48898901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109898849) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 515 + ... + 14834.

Almost surely, 2^109898840 is an apocalyptic number.

109898840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109898840 is an abundant number, since it is smaller than the sum of its proper divisors (138771160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109898840 is a wasteful number, since it uses less digits than its factorization.

109898840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15539 (or 15535 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 47.

The square root of 109898840 is about 10483.2647586522. The cubic root of 109898840 is about 478.9950618604.

The spelling of 109898840 in words is "one hundred nine million, eight hundred ninety-eight thousand, eight hundred forty".