440135740 has 48 divisors (see below), whose sum is σ = 1024871904. Its totient is φ = 157420800.

The previous prime is 440135723. The next prime is 440135747. The reversal of 440135740 is 47531044.

It is a junction number, because it is equal to n+sod(n) for n = 440135699 and 440135708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440135747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2979 + ... + 29818.

It is an arithmetic number, because the mean of its divisors is an integer number (21351498).

Almost surely, 2^440135740 is an apocalyptic number.

It is an amenable number.

440135740 is an abundant number, since it is smaller than the sum of its proper divisors (584736164).

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

440135740 is a wasteful number, since it uses less digits than its factorization.

440135740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32878 (or 32876 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 440135740 is about 20979.4122891944. The cubic root of 440135740 is about 760.6686981663.

Adding to 440135740 its reverse (47531044), we get a palindrome (487666784).

The spelling of 440135740 in words is "four hundred forty million, one hundred thirty-five thousand, seven hundred forty".