83705407 has 2 divisors, whose sum is σ = 83705408. Its totient is φ = 83705406.

The previous prime is 83705389. The next prime is 83705411. The reversal of 83705407 is 70450738.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83705407 - 2¹⁵ = 83672639 is a prime.

It is a super-2 number, since 2×83705407² = 14013190322071298, which contains 22 as substring.

It is equal to p_4872814 and since 83705407 and 4872814 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83709407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41852703 + 41852704.

It is an arithmetic number, because the mean of its divisors is an integer number (41852704).

Almost surely, 2^83705407 is an apocalyptic number.

83705407 is a deficient number, since it is larger than the sum of its proper divisors (1).

83705407 is an equidigital number, since it uses as much as digits as its factorization.

83705407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 83705407 is about 9149.0659086051. The cubic root of 83705407 is about 437.4393398346.

The spelling of 83705407 in words is "eighty-three million, seven hundred five thousand, four hundred seven".