1421361889 has 8 divisors (see below), whose sum is σ = 1483732800. Its totient is φ = 1359038736.

The previous prime is 1421361881. The next prime is 1421361901. The reversal of 1421361889 is 9881631241.

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

It is a cyclic number.

It is not a de Polignac number, because 1421361889 - 2³ = 1421361881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421361881) 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, 57562 + ... + 78460.

It is an arithmetic number, because the mean of its divisors is an integer number (185466600).

Almost surely, 2^1421361889 is an apocalyptic number.

It is an amenable number.

1421361889 is a deficient number, since it is larger than the sum of its proper divisors (62370911).

1421361889 is a wasteful number, since it uses less digits than its factorization.

1421361889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23879.

The product of its digits is 82944, while the sum is 43.

The square root of 1421361889 is about 37700.9534229574. The cubic root of 1421361889 is about 1124.3500809724.

The spelling of 1421361889 in words is "one billion, four hundred twenty-one million, three hundred sixty-one thousand, eight hundred eighty-nine".