1421911829 has 8 divisors (see below), whose sum is σ = 1532085912. Its totient is φ = 1311851520.

The previous prime is 1421911811. The next prime is 1421911837. The reversal of 1421911829 is 9281191241.

It can be written as a sum of positive squares in 4 ways, for example, as 2656900 + 1419254929 = 1630^2 + 37673^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421911829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421911792 and 1421911801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421911849) 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, 1532 + ... + 53349.

It is an arithmetic number, because the mean of its divisors is an integer number (191510739).

Almost surely, 2^1421911829 is an apocalyptic number.

It is an amenable number.

1421911829 is a deficient number, since it is larger than the sum of its proper divisors (110174083).

1421911829 is a wasteful number, since it uses less digits than its factorization.

1421911829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56887.

The product of its digits is 10368, while the sum is 38.

The square root of 1421911829 is about 37708.2461671184. The cubic root of 1421911829 is about 1124.4950699345.

The spelling of 1421911829 in words is "one billion, four hundred twenty-one million, nine hundred eleven thousand, eight hundred twenty-nine".