140829397 has 2 divisors, whose sum is σ = 140829398. Its totient is φ = 140829396.

The previous prime is 140829371. The next prime is 140829407. The reversal of 140829397 is 793928041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83887281 + 56942116 = 9159^2 + 7546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140829397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140829097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70414698 + 70414699.

It is an arithmetic number, because the mean of its divisors is an integer number (70414699).

Almost surely, 2^140829397 is an apocalyptic number.

It is an amenable number.

140829397 is a deficient number, since it is larger than the sum of its proper divisors (1).

140829397 is an equidigital number, since it uses as much as digits as its factorization.

140829397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 140829397 is about 11867.1562305381. The cubic root of 140829397 is about 520.2727821745.

The spelling of 140829397 in words is "one hundred forty million, eight hundred twenty-nine thousand, three hundred ninety-seven".