109726429 has 4 divisors (see below), whose sum is σ = 109755100. Its totient is φ = 109697760.

The previous prime is 109726427. The next prime is 109726469. The reversal of 109726429 is 924627901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 924627901 = 179 ⋅5165519.

It can be written as a sum of positive squares in 2 ways, for example, as 56100100 + 53626329 = 7490^2 + 7323^2 .

It is a cyclic number.

It is not a de Polignac number, because 109726429 - 2¹ = 109726427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109726391 and 109726400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109726427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7512 + ... + 16609.

It is an arithmetic number, because the mean of its divisors is an integer number (27438775).

Almost surely, 2^109726429 is an apocalyptic number.

It is an amenable number.

109726429 is a deficient number, since it is larger than the sum of its proper divisors (28671).

109726429 is an equidigital number, since it uses as much as digits as its factorization.

109726429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28670.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 109726429 is about 10475.0383770180. The cubic root of 109726429 is about 478.7444458040.

The spelling of 109726429 in words is "one hundred nine million, seven hundred twenty-six thousand, four hundred twenty-nine".