140383440 has 60 divisors (see below), whose sum is σ = 471456804. Its totient is φ = 37435392.

The previous prime is 140383417. The next prime is 140383447. The reversal of 140383440 is 44383041.

140383440 is a `hidden beast` number, since 140 + 3 + 83 + 440 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 84492864 + 55890576 = 9192^2 + 7476^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140383447) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 96769 + ... + 98208.

Almost surely, 2^140383440 is an apocalyptic number.

140383440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140383440 is an abundant number, since it is smaller than the sum of its proper divisors (331073364).

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

140383440 is a wasteful number, since it uses less digits than its factorization.

140383440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194996 (or 194987 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 140383440 is about 11848.3517841090. The cubic root of 140383440 is about 519.7230280427.

The spelling of 140383440 in words is "one hundred forty million, three hundred eighty-three thousand, four hundred forty".