140899229 has 2 divisors, whose sum is σ = 140899230. Its totient is φ = 140899228.

The previous prime is 140899217. The next prime is 140899237. The reversal of 140899229 is 922998041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135187129 + 5712100 = 11627^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 140899229 - 2⁸ = 140898973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 140899229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140899249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70449614 + 70449615.

It is an arithmetic number, because the mean of its divisors is an integer number (70449615).

Almost surely, 2^140899229 is an apocalyptic number.

It is an amenable number.

140899229 is a deficient number, since it is larger than the sum of its proper divisors (1).

140899229 is an equidigital number, since it uses as much as digits as its factorization.

140899229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 140899229 is about 11870.0981040596. The cubic root of 140899229 is about 520.3587625313.

The spelling of 140899229 in words is "one hundred forty million, eight hundred ninety-nine thousand, two hundred twenty-nine".