100439229 has 16 divisors (see below), whose sum is σ = 152446464. Its totient is φ = 58225200.

The previous prime is 100439203. The next prime is 100439237. The reversal of 100439229 is 922934001.

It is not a de Polignac number, because 100439229 - 2⁵ = 100439197 is a prime.

It is a super-2 number, since 2×100439229² = 20176077444228882, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100439196 and 100439205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100439239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65407 + ... + 66924.

It is an arithmetic number, because the mean of its divisors is an integer number (9527904).

Almost surely, 2^100439229 is an apocalyptic number.

It is an amenable number.

100439229 is a deficient number, since it is larger than the sum of its proper divisors (52007235).

100439229 is a wasteful number, since it uses less digits than its factorization.

100439229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132368.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 100439229 is about 10021.9373875514. The cubic root of 100439229 is about 464.8374642947.

The spelling of 100439229 in words is "one hundred million, four hundred thirty-nine thousand, two hundred twenty-nine".