83427457 has 2 divisors, whose sum is σ = 83427458. Its totient is φ = 83427456.

The previous prime is 83427437. The next prime is 83427467. The reversal of 83427457 is 75472438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74373376 + 9054081 = 8624^2 + 3009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83427457 is a prime.

It is not a weakly prime, because it can be changed into another prime (83427427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41713728 + 41713729.

It is an arithmetic number, because the mean of its divisors is an integer number (41713729).

Almost surely, 2^83427457 is an apocalyptic number.

It is an amenable number.

83427457 is a deficient number, since it is larger than the sum of its proper divisors (1).

83427457 is an equidigital number, since it uses as much as digits as its factorization.

83427457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 40.

The square root of 83427457 is about 9133.8632023914. The cubic root of 83427457 is about 436.9546196857.

The spelling of 83427457 in words is "eighty-three million, four hundred twenty-seven thousand, four hundred fifty-seven".