4431451340 has 24 divisors (see below), whose sum is σ = 9418172400. Its totient is φ = 1751223488.

The previous prime is 4431451313. The next prime is 4431451361. The reversal of 4431451340 is 431541344.

4431451340 = 10506² + 10507² + ... + 10545².

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 1333115 + ... + 1336434.

It is an arithmetic number, because the mean of its divisors is an integer number (392423850).

Almost surely, 2^4431451340 is an apocalyptic number.

It is an amenable number.

4431451340 is an abundant number, since it is smaller than the sum of its proper divisors (4986721060).

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

4431451340 is a wasteful number, since it uses less digits than its factorization.

4431451340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669641 (or 2669639 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 4431451340 is about 66569.1470577774. The cubic root of 4431451340 is about 1642.5376314888.

Adding to 4431451340 its reverse (431541344), we get a palindrome (4862992684).

The spelling of 4431451340 in words is "four billion, four hundred thirty-one million, four hundred fifty-one thousand, three hundred forty".