140006999 has 4 divisors (see below), whose sum is σ = 152734920. Its totient is φ = 127279080.

The previous prime is 140006981. The next prime is 140007061. The reversal of 140006999 is 999600041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999600041 = 11 ⋅90872731.

It is a cyclic number.

It is not a de Polignac number, because 140006999 - 2⁸ = 140006743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140006929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6363944 + ... + 6363965.

It is an arithmetic number, because the mean of its divisors is an integer number (38183730).

Almost surely, 2^140006999 is an apocalyptic number.

140006999 is a deficient number, since it is larger than the sum of its proper divisors (12727921).

140006999 is a wasteful number, since it uses less digits than its factorization.

140006999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12727920.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 140006999 is about 11832.4553242343. The cubic root of 140006999 is about 519.2580629614.

It can be divided in two parts, 1400069 and 99, that multiplied together give a palindrome (138606831).

The spelling of 140006999 in words is "one hundred forty million, six thousand, nine hundred ninety-nine".