85397399 has 2 divisors, whose sum is σ = 85397400. Its totient is φ = 85397398.

The previous prime is 85397387. The next prime is 85397423. The reversal of 85397399 is 99379358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85397399 - 2¹² = 85393303 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 85397399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85399399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42698699 + 42698700.

It is an arithmetic number, because the mean of its divisors is an integer number (42698700).

Almost surely, 2^85397399 is an apocalyptic number.

85397399 is a deficient number, since it is larger than the sum of its proper divisors (1).

85397399 is an equidigital number, since it uses as much as digits as its factorization.

85397399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 53.

The square root of 85397399 is about 9241.0713123533. The cubic root of 85397399 is about 440.3671161304.

The spelling of 85397399 in words is "eighty-five million, three hundred ninety-seven thousand, three hundred ninety-nine".