140399999 has 8 divisors (see below), whose sum is σ = 144199440. Its totient is φ = 136648000.

The previous prime is 140399993. The next prime is 140400019. The reversal of 140399999 is 999993041.

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 140399999 - 2⁴ = 140399983 is a prime.

It is a Duffinian number.

140399999 is a modest number, since divided by 99999 gives 1403 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 140399999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140399993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5822 + ... + 17739.

It is an arithmetic number, because the mean of its divisors is an integer number (18024930).

Almost surely, 2^140399999 is an apocalyptic number.

140399999 is a deficient number, since it is larger than the sum of its proper divisors (3799441).

140399999 is a wasteful number, since it uses less digits than its factorization.

140399999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23721.

The product of its (nonzero) digits is 708588, while the sum is 53.

The square root of 140399999 is about 11849.0505526814. The cubic root of 140399999 is about 519.7434619706.

The spelling of 140399999 in words is "one hundred forty million, three hundred ninety-nine thousand, nine hundred ninety-nine".