1429423939 has 4 divisors (see below), whose sum is σ = 1456394256. Its totient is φ = 1402453624.

The previous prime is 1429423907. The next prime is 1429423943. The reversal of 1429423939 is 9393249241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1429423939 - 2⁵ = 1429423907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1429423969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13485079 + ... + 13485184.

It is an arithmetic number, because the mean of its divisors is an integer number (364098564).

Almost surely, 2^1429423939 is an apocalyptic number.

1429423939 is a deficient number, since it is larger than the sum of its proper divisors (26970317).

1429423939 is an equidigital number, since it uses as much as digits as its factorization.

1429423939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26970316.

The product of its digits is 419904, while the sum is 46.

The square root of 1429423939 is about 37807.7232718396. The cubic root of 1429423939 is about 1126.4718681088.

The spelling of 1429423939 in words is "one billion, four hundred twenty-nine million, four hundred twenty-three thousand, nine hundred thirty-nine".