83456729 has 2 divisors, whose sum is σ = 83456730. Its totient is φ = 83456728.

The previous prime is 83456713. The next prime is 83456731. The reversal of 83456729 is 92765438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67240000 + 16216729 = 8200^2 + 4027^2 .

It is a cyclic number.

It is not a de Polignac number, because 83456729 - 2⁴ = 83456713 is a prime.

Together with 83456731, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 83456729.

It is not a weakly prime, because it can be changed into another prime (83452729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41728364 + 41728365.

It is an arithmetic number, because the mean of its divisors is an integer number (41728365).

Almost surely, 2^83456729 is an apocalyptic number.

It is an amenable number.

83456729 is a deficient number, since it is larger than the sum of its proper divisors (1).

83456729 is an equidigital number, since it uses as much as digits as its factorization.

83456729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 83456729 is about 9135.4654506489. The cubic root of 83456729 is about 437.0057181308.

The spelling of 83456729 in words is "eighty-three million, four hundred fifty-six thousand, seven hundred twenty-nine".