105489400 has 24 divisors (see below), whose sum is σ = 245263320. Its totient is φ = 42195680.

The previous prime is 105489389. The next prime is 105489401. The reversal of 105489400 is 4984501.

It is a happy number.

It is a super-2 number, since 2×105489400² = 22256027024720000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105489401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 263524 + ... + 263923.

It is an arithmetic number, because the mean of its divisors is an integer number (10219305).

Almost surely, 2^105489400 is an apocalyptic number.

105489400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105489400 is an abundant number, since it is smaller than the sum of its proper divisors (139773920).

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

105489400 is a wasteful number, since it uses less digits than its factorization.

105489400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527463 (or 527454 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 105489400 is about 10270.8032791988. The cubic root of 105489400 is about 472.5012270995.

The spelling of 105489400 in words is "one hundred five million, four hundred eighty-nine thousand, four hundred".