86939453 has 2 divisors, whose sum is σ = 86939454. Its totient is φ = 86939452.

The previous prime is 86939443. The next prime is 86939491. The reversal of 86939453 is 35493968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70593604 + 16345849 = 8402^2 + 4043^2 .

It is a cyclic number.

It is not a de Polignac number, because 86939453 - 2⁸ = 86939197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86939398 and 86939407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86939443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43469726 + 43469727.

It is an arithmetic number, because the mean of its divisors is an integer number (43469727).

Almost surely, 2^86939453 is an apocalyptic number.

It is an amenable number.

86939453 is a deficient number, since it is larger than the sum of its proper divisors (1).

86939453 is an equidigital number, since it uses as much as digits as its factorization.

86939453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The square root of 86939453 is about 9324.1328283117. The cubic root of 86939453 is about 443.0019464982.

The spelling of 86939453 in words is "eighty-six million, nine hundred thirty-nine thousand, four hundred fifty-three".