140809344 has 128 divisors (see below), whose sum is σ = 409778880. Its totient is φ = 42577920.

The previous prime is 140809327. The next prime is 140809387. The reversal of 140809344 is 443908041.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334254 + ... + 334674.

Almost surely, 2^140809344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140809344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204889440).

140809344 is an abundant number, since it is smaller than the sum of its proper divisors (268969536).

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

140809344 is a wasteful number, since it uses less digits than its factorization.

140809344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 140809344 is about 11866.3113055406. The cubic root of 140809344 is about 520.2480867497.

The spelling of 140809344 in words is "one hundred forty million, eight hundred nine thousand, three hundred forty-four".