109290100 has 18 divisors (see below), whose sum is σ = 237159734. Its totient is φ = 43716000.

The previous prime is 109290091. The next prime is 109290149. The reversal of 109290100 is 1092901.

It can be written as a sum of positive squares in 3 ways, for example, as 45796 + 109244304 = 214^2 + 10452^2 .

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, 546351 + ... + 546550.

Almost surely, 2^109290100 is an apocalyptic number.

109290100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109290100 is an abundant number, since it is smaller than the sum of its proper divisors (127869634).

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

109290100 is a wasteful number, since it uses less digits than its factorization.

109290100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092915 (or 1092908 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 109290100 is about 10454.1905473356. The cubic root of 109290100 is about 478.1090243427.

Multiplying 109290100 by its reverse (1092901), we get a square (119443259580100 = 10929010²).

109290100 divided by its reverse (1092901) gives a square (100 = 10²).

The spelling of 109290100 in words is "one hundred nine million, two hundred ninety thousand, one hundred".