85490893 has 2 divisors, whose sum is σ = 85490894. Its totient is φ = 85490892.

The previous prime is 85490879. The next prime is 85490897. The reversal of 85490893 is 39809458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84879369 + 611524 = 9213^2 + 782^2 .

It is a cyclic number.

It is not a de Polignac number, because 85490893 - 2⁹ = 85490381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85490897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42745446 + 42745447.

It is an arithmetic number, because the mean of its divisors is an integer number (42745447).

Almost surely, 2^85490893 is an apocalyptic number.

It is an amenable number.

85490893 is a deficient number, since it is larger than the sum of its proper divisors (1).

85490893 is an equidigital number, since it uses as much as digits as its factorization.

85490893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 85490893 is about 9246.1285411787. The cubic root of 85490893 is about 440.5277637523.

The spelling of 85490893 in words is "eighty-five million, four hundred ninety thousand, eight hundred ninety-three".