1447891968 has 88 divisors (see below), whose sum is σ = 3870434848. Its totient is φ = 481222656.

The previous prime is 1447891877. The next prime is 1447891987. The reversal of 1447891968 is 8691987441.

It is a happy number.

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, 1974930 + ... + 1975662.

Almost surely, 2^1447891968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1447891968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1935217424).

1447891968 is an abundant number, since it is smaller than the sum of its proper divisors (2422542880).

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

1447891968 is an equidigital number, since it uses as much as digits as its factorization.

1447891968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399 (or 1381 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 57.

The square root of 1447891968 is about 38051.1756454383. The cubic root of 1447891968 is about 1131.3024291279.

The spelling of 1447891968 in words is "one billion, four hundred forty-seven million, eight hundred ninety-one thousand, nine hundred sixty-eight".