80849357 has 2 divisors, whose sum is σ = 80849358. Its totient is φ = 80849356.

The previous prime is 80849341. The next prime is 80849383. The reversal of 80849357 is 75394808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73170916 + 7678441 = 8554^2 + 2771^2 .

It is a cyclic number.

It is not a de Polignac number, because 80849357 - 2⁴ = 80849341 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80849257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40424678 + 40424679.

It is an arithmetic number, because the mean of its divisors is an integer number (40424679).

Almost surely, 2^80849357 is an apocalyptic number.

It is an amenable number.

80849357 is a deficient number, since it is larger than the sum of its proper divisors (1).

80849357 is an equidigital number, since it uses as much as digits as its factorization.

80849357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 80849357 is about 8991.6270496501. The cubic root of 80849357 is about 432.4064764869.

The spelling of 80849357 in words is "eighty million, eight hundred forty-nine thousand, three hundred fifty-seven".