86944397 has 2 divisors, whose sum is σ = 86944398. Its totient is φ = 86944396.

The previous prime is 86944391. The next prime is 86944411. The reversal of 86944397 is 79344968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60668521 + 26275876 = 7789^2 + 5126^2 .

It is a cyclic number.

It is not a de Polignac number, because 86944397 - 2¹⁶ = 86878861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86944391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43472198 + 43472199.

It is an arithmetic number, because the mean of its divisors is an integer number (43472199).

Almost surely, 2^86944397 is an apocalyptic number.

It is an amenable number.

86944397 is a deficient number, since it is larger than the sum of its proper divisors (1).

86944397 is an equidigital number, since it uses as much as digits as its factorization.

86944397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 86944397 is about 9324.3979430310. The cubic root of 86944397 is about 443.0103437602.

The spelling of 86944397 in words is "eighty-six million, nine hundred forty-four thousand, three hundred ninety-seven".