140309418 has 8 divisors (see below), whose sum is σ = 280618848. Its totient is φ = 46769804.

The previous prime is 140309417. The next prime is 140309423. The reversal of 140309418 is 814903041.

It is a happy number.

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

140309418 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (140309417) 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, 11692446 + ... + 11692457.

It is an arithmetic number, because the mean of its divisors is an integer number (35077356).

Almost surely, 2^140309418 is an apocalyptic number.

140309418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

140309418 is a wasteful number, since it uses less digits than its factorization.

140309418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23384908.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 140309418 is about 11845.2276466094. The cubic root of 140309418 is about 519.6316646984.

The spelling of 140309418 in words is "one hundred forty million, three hundred nine thousand, four hundred eighteen".