83424857 has 2 divisors, whose sum is σ = 83424858. Its totient is φ = 83424856.

The previous prime is 83424769. The next prime is 83424863. The reversal of 83424857 is 75842438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82011136 + 1413721 = 9056^2 + 1189^2 .

It is a cyclic number.

It is not a de Polignac number, because 83424857 - 2¹⁶ = 83359321 is a prime.

It is equal to p_4857494 and since 83424857 and 4857494 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (83424557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41712428 + 41712429.

It is an arithmetic number, because the mean of its divisors is an integer number (41712429).

Almost surely, 2^83424857 is an apocalyptic number.

It is an amenable number.

83424857 is a deficient number, since it is larger than the sum of its proper divisors (1).

83424857 is an equidigital number, since it uses as much as digits as its factorization.

83424857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 41.

The square root of 83424857 is about 9133.7208737732. The cubic root of 83424857 is about 436.9500804374.

The spelling of 83424857 in words is "eighty-three million, four hundred twenty-four thousand, eight hundred fifty-seven".