109399012 has 24 divisors (see below), whose sum is σ = 203126616. Its totient is φ = 51376128.

The previous prime is 109398997. The next prime is 109399019. The reversal of 109399012 is 210993901.

It can be written as a sum of positive squares in 4 ways, for example, as 70660836 + 38738176 = 8406^2 + 6224^2 .

It is a super-2 number, since 2×109399012² = 23936287653152288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (109399019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38968 + ... + 41680.

It is an arithmetic number, because the mean of its divisors is an integer number (8463609).

Almost surely, 2^109399012 is an apocalyptic number.

It is an amenable number.

109399012 is a deficient number, since it is larger than the sum of its proper divisors (93727604).

109399012 is a wasteful number, since it uses less digits than its factorization.

109399012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 109399012 is about 10459.3982618504. The cubic root of 109399012 is about 478.2677899351.

The spelling of 109399012 in words is "one hundred nine million, three hundred ninety-nine thousand, twelve".