1147446440 has 64 divisors (see below), whose sum is σ = 2957472000. Its totient is φ = 392491008.

The previous prime is 1147446439. The next prime is 1147446457. The reversal of 1147446440 is 446447411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1147446440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121157 + ... + 130283.

It is an arithmetic number, because the mean of its divisors is an integer number (46210500).

Almost surely, 2^1147446440 is an apocalyptic number.

1147446440 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 1147446440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478736000).

1147446440 is an abundant number, since it is smaller than the sum of its proper divisors (1810025560).

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

1147446440 is a wasteful number, since it uses less digits than its factorization.

1147446440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9594 (or 9590 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 1147446440 is about 33873.9788037957. The cubic root of 1147446440 is about 1046.9135181669.

The spelling of 1147446440 in words is "one billion, one hundred forty-seven million, four hundred forty-six thousand, four hundred forty".