429397109 has 4 divisors (see below), whose sum is σ = 430353900. Its totient is φ = 428440320.

The previous prime is 429397091. The next prime is 429397127. The reversal of 429397109 is 901793924.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (429397091) and next prime (429397127).

It can be written as a sum of positive squares in 2 ways, for example, as 308880625 + 120516484 = 17575^2 + 10978^2 .

It is a cyclic number.

It is not a de Polignac number, because 429397109 - 2²⁰ = 428348533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 429397109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (429367109) 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 3 ways as a sum of consecutive naturals, for example, 477722 + ... + 478619.

It is an arithmetic number, because the mean of its divisors is an integer number (107588475).

Almost surely, 2^429397109 is an apocalyptic number.

It is an amenable number.

429397109 is a deficient number, since it is larger than the sum of its proper divisors (956791).

429397109 is an equidigital number, since it uses as much as digits as its factorization.

429397109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956790.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 429397109 is about 20721.8992614094. The cubic root of 429397109 is about 754.4313124690.

The spelling of 429397109 in words is "four hundred twenty-nine million, three hundred ninety-seven thousand, one hundred nine".