83955187 has 2 divisors, whose sum is σ = 83955188. Its totient is φ = 83955186.

The previous prime is 83955143. The next prime is 83955191. The reversal of 83955187 is 78155938.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83955187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83955587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41977593 + 41977594.

It is an arithmetic number, because the mean of its divisors is an integer number (41977594).

Almost surely, 2^83955187 is an apocalyptic number.

83955187 is a deficient number, since it is larger than the sum of its proper divisors (1).

83955187 is an equidigital number, since it uses as much as digits as its factorization.

83955187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 46.

The square root of 83955187 is about 9162.7063141847. The cubic root of 83955187 is about 437.8740194244.

The spelling of 83955187 in words is "eighty-three million, nine hundred fifty-five thousand, one hundred eighty-seven".