140146899 has 4 divisors (see below), whose sum is σ = 186862536. Its totient is φ = 93431264.

The previous prime is 140146891. The next prime is 140146927. The reversal of 140146899 is 998641041.

140146899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998641041 = 3 ⋅332880347.

It is a cyclic number.

It is not a de Polignac number, because 140146899 - 2³ = 140146891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140146899.

It is not an unprimeable number, because it can be changed into a prime (140146891) 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, 23357814 + ... + 23357819.

It is an arithmetic number, because the mean of its divisors is an integer number (46715634).

Almost surely, 2^140146899 is an apocalyptic number.

140146899 is a deficient number, since it is larger than the sum of its proper divisors (46715637).

140146899 is an equidigital number, since it uses as much as digits as its factorization.

140146899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46715636.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 140146899 is about 11838.3655544167. The cubic root of 140146899 is about 519.4309591279.

The spelling of 140146899 in words is "one hundred forty million, one hundred forty-six thousand, eight hundred ninety-nine".