85921699 has 2 divisors, whose sum is σ = 85921700. Its totient is φ = 85921698.

The previous prime is 85921681. The next prime is 85921741. The reversal of 85921699 is 99612958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85921699 - 2⁷ = 85921571 is a prime.

It is not a weakly prime, because it can be changed into another prime (85921679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42960849 + 42960850.

It is an arithmetic number, because the mean of its divisors is an integer number (42960850).

Almost surely, 2^85921699 is an apocalyptic number.

85921699 is a deficient number, since it is larger than the sum of its proper divisors (1).

85921699 is an equidigital number, since it uses as much as digits as its factorization.

85921699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 49.

The square root of 85921699 is about 9269.3958271292. The cubic root of 85921699 is about 441.2664939384.

The spelling of 85921699 in words is "eighty-five million, nine hundred twenty-one thousand, six hundred ninety-nine".