140163889 has 4 divisors (see below), whose sum is σ = 140327920. Its totient is φ = 139999860.

The previous prime is 140163857. The next prime is 140163923. The reversal of 140163889 is 988361041.

140163889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140163889 - 2⁵ = 140163857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144163889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80727 + ... + 82444.

It is an arithmetic number, because the mean of its divisors is an integer number (35081980).

Almost surely, 2^140163889 is an apocalyptic number.

It is an amenable number.

140163889 is a deficient number, since it is larger than the sum of its proper divisors (164031).

140163889 is an equidigital number, since it uses as much as digits as its factorization.

140163889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164030.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 140163889 is about 11839.0831148362. The cubic root of 140163889 is about 519.4519484742.

The spelling of 140163889 in words is "one hundred forty million, one hundred sixty-three thousand, eight hundred eighty-nine".