86770949 has 2 divisors, whose sum is σ = 86770950. Its totient is φ = 86770948.

The previous prime is 86770933. The next prime is 86770961. The reversal of 86770949 is 94907768.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72760900 + 14010049 = 8530^2 + 3743^2 .

It is a cyclic number.

It is not a de Polignac number, because 86770949 - 2⁴ = 86770933 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86770897 and 86770906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86770909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43385474 + 43385475.

It is an arithmetic number, because the mean of its divisors is an integer number (43385475).

Almost surely, 2^86770949 is an apocalyptic number.

It is an amenable number.

86770949 is a deficient number, since it is larger than the sum of its proper divisors (1).

86770949 is an equidigital number, since it uses as much as digits as its factorization.

86770949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 86770949 is about 9315.0925384561. The cubic root of 86770949 is about 442.7155560807.

The spelling of 86770949 in words is "eighty-six million, seven hundred seventy thousand, nine hundred forty-nine".