82951889 has 2 divisors, whose sum is σ = 82951890. Its totient is φ = 82951888.

The previous prime is 82951867. The next prime is 82951903. The reversal of 82951889 is 98815928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62094400 + 20857489 = 7880^2 + 4567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82951889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (82951819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41475944 + 41475945.

It is an arithmetic number, because the mean of its divisors is an integer number (41475945).

Almost surely, 2^82951889 is an apocalyptic number.

It is an amenable number.

82951889 is a deficient number, since it is larger than the sum of its proper divisors (1).

82951889 is an equidigital number, since it uses as much as digits as its factorization.

82951889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 50.

The square root of 82951889 is about 9107.7927622449. The cubic root of 82951889 is about 436.1227682923.

The spelling of 82951889 in words is "eighty-two million, nine hundred fifty-one thousand, eight hundred eighty-nine".