100909400 has 24 divisors (see below), whose sum is σ = 234614820. Its totient is φ = 40363680.

The previous prime is 100909387. The next prime is 100909421. The reversal of 100909400 is 4909001.

It is a super-4 number, since 4×100909400⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252074 + ... + 252473.

Almost surely, 2^100909400 is an apocalyptic number.

100909400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100909400 is an abundant number, since it is smaller than the sum of its proper divisors (133705420).

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

100909400 is a wasteful number, since it uses less digits than its factorization.

100909400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504563 (or 504554 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 100909400 is about 10045.3670913511. The cubic root of 100909400 is about 465.5616599275.

The spelling of 100909400 in words is "one hundred million, nine hundred nine thousand, four hundred".