140409885 has 64 divisors (see below), whose sum is σ = 296607744. Its totient is φ = 54912000.

The previous prime is 140409853. The next prime is 140409889. The reversal of 140409885 is 588904041.

It is not a de Polignac number, because 140409885 - 2⁵ = 140409853 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140409889) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16060 + ... + 23210.

It is an arithmetic number, because the mean of its divisors is an integer number (4634496).

Almost surely, 2^140409885 is an apocalyptic number.

140409885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140409885 is an abundant number, since it is smaller than the sum of its proper divisors (156197859).

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

140409885 is a wasteful number, since it uses less digits than its factorization.

140409885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7194.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 140409885 is about 11849.4677095640. The cubic root of 140409885 is about 519.7556606014.

The spelling of 140409885 in words is "one hundred forty million, four hundred nine thousand, eight hundred eighty-five".