429991073 has 4 divisors (see below), whose sum is σ = 432838848. Its totient is φ = 427143300.

The previous prime is 429991063. The next prime is 429991117. The reversal of 429991073 is 370199924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 429991073 - 2⁴ = 429991057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (429991063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1423661 + ... + 1423962.

It is an arithmetic number, because the mean of its divisors is an integer number (108209712).

Almost surely, 2^429991073 is an apocalyptic number.

It is an amenable number.

429991073 is a deficient number, since it is larger than the sum of its proper divisors (2847775).

429991073 is a wasteful number, since it uses less digits than its factorization.

429991073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847774.

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

The square root of 429991073 is about 20736.2261031269. The cubic root of 429991073 is about 754.7790081687.

The spelling of 429991073 in words is "four hundred twenty-nine million, nine hundred ninety-one thousand, seventy-three".