109939829 has 2 divisors, whose sum is σ = 109939830. Its totient is φ = 109939828.

The previous prime is 109939789. The next prime is 109939883. The reversal of 109939829 is 928939901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102111025 + 7828804 = 10105^2 + 2798^2 .

It is a cyclic number.

It is not a de Polignac number, because 109939829 - 2¹² = 109935733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109939129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54969914 + 54969915.

It is an arithmetic number, because the mean of its divisors is an integer number (54969915).

Almost surely, 2^109939829 is an apocalyptic number.

It is an amenable number.

109939829 is a deficient number, since it is larger than the sum of its proper divisors (1).

109939829 is an equidigital number, since it uses as much as digits as its factorization.

109939829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 109939829 is about 10485.2195494420. The cubic root of 109939829 is about 479.0546047643.

The spelling of 109939829 in words is "one hundred nine million, nine hundred thirty-nine thousand, eight hundred twenty-nine".