86490629 has 2 divisors, whose sum is σ = 86490630. Its totient is φ = 86490628.

The previous prime is 86490623. The next prime is 86490653. The reversal of 86490629 is 92609468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73994404 + 12496225 = 8602^2 + 3535^2 .

It is a cyclic number.

It is not a de Polignac number, because 86490629 - 2²⁰ = 85442053 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86490629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86490623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43245314 + 43245315.

It is an arithmetic number, because the mean of its divisors is an integer number (43245315).

Almost surely, 2^86490629 is an apocalyptic number.

It is an amenable number.

86490629 is a deficient number, since it is larger than the sum of its proper divisors (1).

86490629 is an equidigital number, since it uses as much as digits as its factorization.

86490629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 86490629 is about 9300.0338171428. The cubic root of 86490629 is about 442.2382999377.

The spelling of 86490629 in words is "eighty-six million, four hundred ninety thousand, six hundred twenty-nine".