1447111900 has 72 divisors (see below), whose sum is σ = 3412062864. Its totient is φ = 529536000.

The previous prime is 1447111879. The next prime is 1447111901. The reversal of 1447111900 is 91117441.

It is a super-3 number, since 3×1447111900³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1447111901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141975 + ... + 151825.

It is an arithmetic number, because the mean of its divisors is an integer number (47389762).

Almost surely, 2^1447111900 is an apocalyptic number.

1447111900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1447111900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1706031432).

1447111900 is an abundant number, since it is smaller than the sum of its proper divisors (1964950964).

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

1447111900 is a wasteful number, since it uses less digits than its factorization.

1447111900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9991 (or 9984 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1447111900 is about 38040.9240161172. The cubic root of 1447111900 is about 1131.0992253497.

It can be divided in two parts, 144711 and 1900, that added together give a triangular number (146611 = T₅₄₁).

The spelling of 1447111900 in words is "one billion, four hundred forty-seven million, one hundred eleven thousand, nine hundred".