853694293 has 2 divisors, whose sum is σ = 853694294. Its totient is φ = 853694292.

The previous prime is 853694249. The next prime is 853694299. The reversal of 853694293 is 392496358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 628153969 + 225540324 = 25063^2 + 15018^2 .

It is a cyclic number.

It is not a de Polignac number, because 853694293 - 2²¹ = 851597141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853694299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426847146 + 426847147.

It is an arithmetic number, because the mean of its divisors is an integer number (426847147).

Almost surely, 2^853694293 is an apocalyptic number.

It is an amenable number.

853694293 is a deficient number, since it is larger than the sum of its proper divisors (1).

853694293 is an equidigital number, since it uses as much as digits as its factorization.

853694293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 49.

The square root of 853694293 is about 29218.0473851351. The cubic root of 853694293 is about 948.6386014093.

The spelling of 853694293 in words is "eight hundred fifty-three million, six hundred ninety-four thousand, two hundred ninety-three".