429739138 has 4 divisors (see below), whose sum is σ = 644608710. Its totient is φ = 214869568.

The previous prime is 429739133. The next prime is 429739147. The reversal of 429739138 is 831937924.

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

It can be written as a sum of positive squares in only one way, i.e., 425885769 + 3853369 = 20637^2 + 1963^2 .

It is not an unprimeable number, because it can be changed into a prime (429739133) 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 as a sum of consecutive naturals, namely, 107434783 + ... + 107434786.

Almost surely, 2^429739138 is an apocalyptic number.

429739138 is a deficient number, since it is larger than the sum of its proper divisors (214869572).

429739138 is a wasteful number, since it uses less digits than its factorization.

429739138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214869571.

The product of its digits is 326592, while the sum is 46.

The square root of 429739138 is about 20730.1504577270. The cubic root of 429739138 is about 754.6315691393.

The spelling of 429739138 in words is "four hundred twenty-nine million, seven hundred thirty-nine thousand, one hundred thirty-eight".