83957197 has 2 divisors, whose sum is σ = 83957198. Its totient is φ = 83957196.

The previous prime is 83957189. The next prime is 83957213. The reversal of 83957197 is 79175938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43837641 + 40119556 = 6621^2 + 6334^2 .

It is a cyclic number.

It is not a de Polignac number, because 83957197 - 2³ = 83957189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83957197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83957597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41978598 + 41978599.

It is an arithmetic number, because the mean of its divisors is an integer number (41978599).

Almost surely, 2^83957197 is an apocalyptic number.

It is an amenable number.

83957197 is a deficient number, since it is larger than the sum of its proper divisors (1).

83957197 is an equidigital number, since it uses as much as digits as its factorization.

83957197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 49.

The square root of 83957197 is about 9162.8159972794. The cubic root of 83957197 is about 437.8775138273.

The spelling of 83957197 in words is "eighty-three million, nine hundred fifty-seven thousand, one hundred ninety-seven".