429139906 has 8 divisors (see below), whose sum is σ = 693226044. Its totient is φ = 198064560.

The previous prime is 429139897. The next prime is 429139937. The reversal of 429139906 is 609931924.

It can be written as a sum of positive squares in 2 ways, for example, as 370755025 + 58384881 = 19255^2 + 7641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×429139906² = 368322117843377672, which contains 22 as substring.

It is an unprimeable number.

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, 8252665 + ... + 8252716.

Almost surely, 2^429139906 is an apocalyptic number.

429139906 is a deficient number, since it is larger than the sum of its proper divisors (264086138).

429139906 is a wasteful number, since it uses less digits than its factorization.

429139906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16505396.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 429139906 is about 20715.6922645612. The cubic root of 429139906 is about 754.2806510350.

The spelling of 429139906 in words is "four hundred twenty-nine million, one hundred thirty-nine thousand, nine hundred six".