100899612 has 72 divisors (see below), whose sum is σ = 282867312. Its totient is φ = 30067200.

The previous prime is 100899599. The next prime is 100899713. The reversal of 100899612 is 216998001.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22068 + ... + 26244.

Almost surely, 2^100899612 is an apocalyptic number.

100899612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100899612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141433656).

100899612 is an abundant number, since it is smaller than the sum of its proper divisors (181967700).

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

100899612 is a wasteful number, since it uses less digits than its factorization.

100899612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259 (or 4254 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 100899612 is about 10044.8798897747. The cubic root of 100899612 is about 465.5466066062.

It can be divided in two parts, 10089 and 9612, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 100899612 in words is "one hundred million, eight hundred ninety-nine thousand, six hundred twelve".