1421889472 has 42 divisors (see below), whose sum is σ = 2977929528. Its totient is φ = 673515648.

The previous prime is 1421889467. The next prime is 1421889487. The reversal of 1421889472 is 2749881241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7668 + ... + 53875.

It is an arithmetic number, because the mean of its divisors is an integer number (70903084).

Almost surely, 2^1421889472 is an apocalyptic number.

It is an amenable number.

1421889472 is an abundant number, since it is smaller than the sum of its proper divisors (1556040056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421889472 is an equidigital number, since it uses as much as digits as its factorization.

1421889472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61593 (or 61564 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 1421889472 is about 37707.9497188590. The cubic root of 1421889472 is about 1124.4891763511.

The spelling of 1421889472 in words is "one billion, four hundred twenty-one million, eight hundred eighty-nine thousand, four hundred seventy-two".