429684538 has 4 divisors (see below), whose sum is σ = 644526810. Its totient is φ = 214842268.

The previous prime is 429684533. The next prime is 429684539. The reversal of 429684538 is 835486924.

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., 358231329 + 71453209 = 18927^2 + 8453^2 .

It is a junction number, because it is equal to n+sod(n) for n = 429684491 and 429684500.

It is not an unprimeable number, because it can be changed into a prime (429684533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107421133 + ... + 107421136.

Almost surely, 2^429684538 is an apocalyptic number.

429684538 is a deficient number, since it is larger than the sum of its proper divisors (214842272).

429684538 is a wasteful number, since it uses less digits than its factorization.

429684538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214842271.

The product of its digits is 1658880, while the sum is 49.

The square root of 429684538 is about 20728.8334934699. The cubic root of 429684538 is about 754.5996081773.

The spelling of 429684538 in words is "four hundred twenty-nine million, six hundred eighty-four thousand, five hundred thirty-eight".