86873881 has 2 divisors, whose sum is σ = 86873882. Its totient is φ = 86873880.

The previous prime is 86873849. The next prime is 86873903. The reversal of 86873881 is 18837868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63059481 + 23814400 = 7941^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 86873881 - 2⁵ = 86873849 is a prime.

It is a super-2 number, since 2×86873881² = 15094142400004322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86873081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43436940 + 43436941.

It is an arithmetic number, because the mean of its divisors is an integer number (43436941).

Almost surely, 2^86873881 is an apocalyptic number.

It is an amenable number.

86873881 is a deficient number, since it is larger than the sum of its proper divisors (1).

86873881 is an equidigital number, since it uses as much as digits as its factorization.

86873881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 49.

The square root of 86873881 is about 9320.6159131251. The cubic root of 86873881 is about 442.8905439502.

The spelling of 86873881 in words is "eighty-six million, eight hundred seventy-three thousand, eight hundred eighty-one".