1429381639 has 8 divisors (see below), whose sum is σ = 1636830720. Its totient is φ = 1222745496.

The previous prime is 1429381633. The next prime is 1429381643. The reversal of 1429381639 is 9361839241.

It is a happy number.

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

It is not a de Polignac number, because 1429381639 - 2³ = 1429381631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429381631) 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 in 7 ways as a sum of consecutive naturals, for example, 199459 + ... + 206500.

It is an arithmetic number, because the mean of its divisors is an integer number (204603840).

Almost surely, 2^1429381639 is an apocalyptic number.

1429381639 is a deficient number, since it is larger than the sum of its proper divisors (207449081).

1429381639 is an equidigital number, since it uses as much as digits as its factorization.

1429381639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406469.

The product of its digits is 279936, while the sum is 46.

The square root of 1429381639 is about 37807.1638581896. The cubic root of 1429381639 is about 1126.4607563529.

The spelling of 1429381639 in words is "one billion, four hundred twenty-nine million, three hundred eighty-one thousand, six hundred thirty-nine".