83430287 has 2 divisors, whose sum is σ = 83430288. Its totient is φ = 83430286.

The previous prime is 83430283. The next prime is 83430293. The reversal of 83430287 is 78203438.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83430287 - 2² = 83430283 is a prime.

It is a super-2 number, since 2×83430287² = 13921225577804738, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83430283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41715143 + 41715144.

It is an arithmetic number, because the mean of its divisors is an integer number (41715144).

Almost surely, 2^83430287 is an apocalyptic number.

83430287 is a deficient number, since it is larger than the sum of its proper divisors (1).

83430287 is an equidigital number, since it uses as much as digits as its factorization.

83430287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 83430287 is about 9134.0181190974. The cubic root of 83430287 is about 436.9595603756.

The spelling of 83430287 in words is "eighty-three million, four hundred thirty thousand, two hundred eighty-seven".