83140493 has 2 divisors, whose sum is σ = 83140494. Its totient is φ = 83140492.

The previous prime is 83140483. The next prime is 83140529. The reversal of 83140493 is 39404138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78180964 + 4959529 = 8842^2 + 2227^2 .

It is a cyclic number.

It is not a de Polignac number, because 83140493 - 2⁸ = 83140237 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83140433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41570246 + 41570247.

It is an arithmetic number, because the mean of its divisors is an integer number (41570247).

Almost surely, 2^83140493 is an apocalyptic number.

It is an amenable number.

83140493 is a deficient number, since it is larger than the sum of its proper divisors (1).

83140493 is an equidigital number, since it uses as much as digits as its factorization.

83140493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 83140493 is about 9118.1408741037. The cubic root of 83140493 is about 436.4530490480.

The spelling of 83140493 in words is "eighty-three million, one hundred forty thousand, four hundred ninety-three".