140660440 has 32 divisors (see below), whose sum is σ = 327402000. Its totient is φ = 54323584.

The previous prime is 140660437. The next prime is 140660447. The reversal of 140660440 is 44066041.

140660440 is digitally balanced in base 3, 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 (140660447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59470 + ... + 61789.

Almost surely, 2^140660440 is an apocalyptic number.

140660440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140660440 is an abundant number, since it is smaller than the sum of its proper divisors (186741560).

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

140660440 is a wasteful number, since it uses less digits than its factorization.

140660440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121299 (or 121295 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 140660440 is about 11860.0354131006. The cubic root of 140660440 is about 520.0646369356.

The spelling of 140660440 in words is "one hundred forty million, six hundred sixty thousand, four hundred forty".