85406193 has 6 divisors (see below), whose sum is σ = 123364514. Its totient is φ = 56937456.

The previous prime is 85406177. The next prime is 85406203. The reversal of 85406193 is 39160458.

It can be written as a sum of positive squares in only one way, i.e., 52881984 + 32524209 = 7272^2 + 5703^2 .

It is not a de Polignac number, because 85406193 - 2⁴ = 85406177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85406143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4744780 + ... + 4744797.

Almost surely, 2^85406193 is an apocalyptic number.

It is an amenable number.

85406193 is a deficient number, since it is larger than the sum of its proper divisors (37958321).

85406193 is a wasteful number, since it uses less digits than its factorization.

85406193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9489583 (or 9489580 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 85406193 is about 9241.5471107385. The cubic root of 85406193 is about 440.3822315614.

The spelling of 85406193 in words is "eighty-five million, four hundred six thousand, one hundred ninety-three".