140388899 has 8 divisors (see below), whose sum is σ = 160994400. Its totient is φ = 119920896.

The previous prime is 140388893. The next prime is 140388917. The reversal of 140388899 is 998883041.

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 140388899 - 2⁸ = 140388643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140388893) 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, 32174 + ... + 36275.

It is an arithmetic number, because the mean of its divisors is an integer number (20124300).

Almost surely, 2^140388899 is an apocalyptic number.

140388899 is a deficient number, since it is larger than the sum of its proper divisors (20605501).

140388899 is an equidigital number, since it uses as much as digits as its factorization.

140388899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68749.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 140388899 is about 11848.5821514644. The cubic root of 140388899 is about 519.7297646664.

The spelling of 140388899 in words is "one hundred forty million, three hundred eighty-eight thousand, eight hundred ninety-nine".