140404440 has 64 divisors (see below), whose sum is σ = 459509760. Its totient is φ = 34037120.

The previous prime is 140404423. The next prime is 140404447. The reversal of 140404440 is 44404041.

140404440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140404447) 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, 51864 + ... + 54503.

It is an arithmetic number, because the mean of its divisors is an integer number (7179840).

Almost surely, 2^140404440 is an apocalyptic number.

140404440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140404440 is an abundant number, since it is smaller than the sum of its proper divisors (319105320).

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

140404440 is a wasteful number, since it uses less digits than its factorization.

140404440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106392 (or 106388 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 140404440 is about 11849.2379501806. The cubic root of 140404440 is about 519.7489419240.

Adding to 140404440 its reverse (44404041), we get a palindrome (184808481).

The spelling of 140404440 in words is "one hundred forty million, four hundred four thousand, four hundred forty".