109213988 has 12 divisors (see below), whose sum is σ = 205826460. Its totient is φ = 50406432.

The previous prime is 109213987. The next prime is 109213997. The reversal of 109213988 is 889312901.

It can be written as a sum of positive squares in 2 ways, for example, as 12545764 + 96668224 = 3542^2 + 9832^2 .

It is a super-3 number, since 3×109213988³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (109213987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050083 + ... + 1050186.

It is an arithmetic number, because the mean of its divisors is an integer number (17152205).

Almost surely, 2^109213988 is an apocalyptic number.

It is an amenable number.

109213988 is a deficient number, since it is larger than the sum of its proper divisors (96612472).

109213988 is a wasteful number, since it uses less digits than its factorization.

109213988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100286 (or 2100284 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 109213988 is about 10450.5496506165. The cubic root of 109213988 is about 477.9980100639.

The spelling of 109213988 in words is "one hundred nine million, two hundred thirteen thousand, nine hundred eighty-eight".