1429387909 has 4 divisors (see below), whose sum is σ = 1429485120. Its totient is φ = 1429290700.

The previous prime is 1429387889. The next prime is 1429387937. The reversal of 1429387909 is 9097839241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1429387909 - 2¹³ = 1429379717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429387979) 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, 21517 + ... + 57634.

It is an arithmetic number, because the mean of its divisors is an integer number (357371280).

Almost surely, 2^1429387909 is an apocalyptic number.

It is an amenable number.

1429387909 is a deficient number, since it is larger than the sum of its proper divisors (97211).

1429387909 is an equidigital number, since it uses as much as digits as its factorization.

1429387909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97210.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 1429387909 is about 37807.2467788915. The cubic root of 1429387909 is about 1126.4624034284.

The spelling of 1429387909 in words is "one billion, four hundred twenty-nine million, three hundred eighty-seven thousand, nine hundred nine".