140993999 has 4 divisors (see below), whose sum is σ = 141229200. Its totient is φ = 140758800.

The previous prime is 140993977. The next prime is 140994043. The reversal of 140993999 is 999399041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140993999 - 2¹² = 140989903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140993999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140993299) 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, 116699 + ... + 117900.

It is an arithmetic number, because the mean of its divisors is an integer number (35307300).

Almost surely, 2^140993999 is an apocalyptic number.

140993999 is a deficient number, since it is larger than the sum of its proper divisors (235201).

140993999 is an equidigital number, since it uses as much as digits as its factorization.

140993999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235200.

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

The square root of 140993999 is about 11874.0893966653. The cubic root of 140993999 is about 520.4754022696.

The spelling of 140993999 in words is "one hundred forty million, nine hundred ninety-three thousand, nine hundred ninety-nine".