140530829 has 2 divisors, whose sum is σ = 140530830. Its totient is φ = 140530828.

The previous prime is 140530813. The next prime is 140530867. The reversal of 140530829 is 928035041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139476100 + 1054729 = 11810^2 + 1027^2 .

It is a cyclic number.

It is not a de Polignac number, because 140530829 - 2⁴ = 140530813 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140530795 and 140530804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140530889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70265414 + 70265415.

It is an arithmetic number, because the mean of its divisors is an integer number (70265415).

Almost surely, 2^140530829 is an apocalyptic number.

It is an amenable number.

140530829 is a deficient number, since it is larger than the sum of its proper divisors (1).

140530829 is an equidigital number, since it uses as much as digits as its factorization.

140530829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 140530829 is about 11854.5699626768. The cubic root of 140530829 is about 519.9048506873.

The spelling of 140530829 in words is "one hundred forty million, five hundred thirty thousand, eight hundred twenty-nine".