86490077 has 2 divisors, whose sum is σ = 86490078. Its totient is φ = 86490076.

The previous prime is 86490073. The next prime is 86490149. The reversal of 86490077 is 77009468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79905721 + 6584356 = 8939^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 86490077 - 2² = 86490073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86490073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43245038 + 43245039.

It is an arithmetic number, because the mean of its divisors is an integer number (43245039).

Almost surely, 2^86490077 is an apocalyptic number.

It is an amenable number.

86490077 is a deficient number, since it is larger than the sum of its proper divisors (1).

86490077 is an equidigital number, since it uses as much as digits as its factorization.

86490077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 86490077 is about 9300.0041397840. The cubic root of 86490077 is about 442.2373591188.

The spelling of 86490077 in words is "eighty-six million, four hundred ninety thousand, seventy-seven".