429323257 has 4 divisors (see below), whose sum is σ = 468352656. Its totient is φ = 390293860.

The previous prime is 429323249. The next prime is 429323263. The reversal of 429323257 is 752323924.

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 not a de Polignac number, because 429323257 - 2³ = 429323249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (429323207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19514683 + ... + 19514704.

It is an arithmetic number, because the mean of its divisors is an integer number (117088164).

Almost surely, 2^429323257 is an apocalyptic number.

It is an amenable number.

429323257 is a deficient number, since it is larger than the sum of its proper divisors (39029399).

429323257 is a wasteful number, since it uses less digits than its factorization.

429323257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39029398.

The product of its digits is 90720, while the sum is 37.

The square root of 429323257 is about 20720.1172052670. The cubic root of 429323257 is about 754.3880584472.

The spelling of 429323257 in words is "four hundred twenty-nine million, three hundred twenty-three thousand, two hundred fifty-seven".