140400440 has 32 divisors (see below), whose sum is σ = 317682000. Its totient is φ = 55843584.

The previous prime is 140400439. The next prime is 140400451. The reversal of 140400440 is 44004041.

140400440 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2645 + ... + 16964.

Almost surely, 2^140400440 is an apocalyptic number.

140400440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140400440 is an abundant number, since it is smaller than the sum of its proper divisors (177281560).

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

140400440 is a wasteful number, since it uses less digits than its factorization.

140400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19799 (or 19795 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 140400440 is about 11849.0691617527. The cubic root of 140400440 is about 519.7440061459.

Adding to 140400440 its reverse (44004041), we get a palindrome (184404481).

The spelling of 140400440 in words is "one hundred forty million, four hundred thousand, four hundred forty".