140890009 has 8 divisors (see below), whose sum is σ = 156622592. Its totient is φ = 125856720.

The previous prime is 140889977. The next prime is 140890037. The reversal of 140890009 is 900098041.

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

It is a cyclic number.

It is not a de Polignac number, because 140890009 - 2⁵ = 140889977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140890039) 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, 174399 + ... + 175204.

It is an arithmetic number, because the mean of its divisors is an integer number (19577824).

Almost surely, 2^140890009 is an apocalyptic number.

It is an amenable number.

140890009 is a deficient number, since it is larger than the sum of its proper divisors (15732583).

140890009 is a wasteful number, since it uses less digits than its factorization.

140890009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349647.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 140890009 is about 11869.7097268636. The cubic root of 140890009 is about 520.3474120730.

The spelling of 140890009 in words is "one hundred forty million, eight hundred ninety thousand, nine".