140288865 has 8 divisors (see below), whose sum is σ = 224462208. Its totient is φ = 74820720.

The previous prime is 140288861. The next prime is 140288881. The reversal of 140288865 is 568882041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140288865 - 2² = 140288861 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (140288861) 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, 4676281 + ... + 4676310.

It is an arithmetic number, because the mean of its divisors is an integer number (28057776).

Almost surely, 2^140288865 is an apocalyptic number.

140288865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140288865 is a deficient number, since it is larger than the sum of its proper divisors (84173343).

140288865 is an equidigital number, since it uses as much as digits as its factorization.

140288865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9352599.

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 140288865 is about 11844.3600502518. The cubic root of 140288865 is about 519.6062909892.

The spelling of 140288865 in words is "one hundred forty million, two hundred eighty-eight thousand, eight hundred sixty-five".