1421386844 has 24 divisors (see below), whose sum is σ = 2655945600. Its totient is φ = 663982704.

The previous prime is 1421386787. The next prime is 1421386873. The reversal of 1421386844 is 4486831241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175694 + ... + 183605.

It is an arithmetic number, because the mean of its divisors is an integer number (110664400).

Almost surely, 2^1421386844 is an apocalyptic number.

It is an amenable number.

1421386844 is a deficient number, since it is larger than the sum of its proper divisors (1234558756).

1421386844 is a wasteful number, since it uses less digits than its factorization.

1421386844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359369 (or 359367 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 1421386844 is about 37701.2843813046. The cubic root of 1421386844 is about 1124.3566610448.

The spelling of 1421386844 in words is "one billion, four hundred twenty-one million, three hundred eighty-six thousand, eight hundred forty-four".