140229913 has 4 divisors (see below), whose sum is σ = 141805620. Its totient is φ = 138654208.

The previous prime is 140229907. The next prime is 140230001. The reversal of 140229913 is 319922041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 319922041 = 2143 ⋅149287.

It can be written as a sum of positive squares in 2 ways, for example, as 21790224 + 118439689 = 4668^2 + 10883^2 .

It is a cyclic number.

It is not a de Polignac number, because 140229913 - 2¹³ = 140221721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140223913) 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, 787720 + ... + 787897.

It is an arithmetic number, because the mean of its divisors is an integer number (35451405).

Almost surely, 2^140229913 is an apocalyptic number.

It is an amenable number.

140229913 is a deficient number, since it is larger than the sum of its proper divisors (1575707).

140229913 is an equidigital number, since it uses as much as digits as its factorization.

140229913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575706.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 140229913 is about 11841.8711781542. The cubic root of 140229913 is about 519.5334980374.

The spelling of 140229913 in words is "one hundred forty million, two hundred twenty-nine thousand, nine hundred thirteen".