140440829 has 4 divisors (see below), whose sum is σ = 146546976. Its totient is φ = 134334684.

The previous prime is 140440801. The next prime is 140440871. The reversal of 140440829 is 928044041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140440829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140440795 and 140440804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140440879) 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, 3053039 + ... + 3053084.

It is an arithmetic number, because the mean of its divisors is an integer number (36636744).

Almost surely, 2^140440829 is an apocalyptic number.

It is an amenable number.

140440829 is a deficient number, since it is larger than the sum of its proper divisors (6106147).

140440829 is an equidigital number, since it uses as much as digits as its factorization.

140440829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106146.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 140440829 is about 11850.7733502924. The cubic root of 140440829 is about 519.7938396271.

The spelling of 140440829 in words is "one hundred forty million, four hundred forty thousand, eight hundred twenty-nine".