775411493 has 2 divisors, whose sum is σ = 775411494. Its totient is φ = 775411492.

The previous prime is 775411477. The next prime is 775411517. The reversal of 775411493 is 394114577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 650352004 + 125059489 = 25502^2 + 11183^2 .

It is an emirp because it is prime and its reverse (394114577) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 775411493 - 2⁴ = 775411477 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 775411493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (775411433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387705746 + 387705747.

It is an arithmetic number, because the mean of its divisors is an integer number (387705747).

Almost surely, 2^775411493 is an apocalyptic number.

It is an amenable number.

775411493 is a deficient number, since it is larger than the sum of its proper divisors (1).

775411493 is an equidigital number, since it uses as much as digits as its factorization.

775411493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 775411493 is about 27846.2114658350. The cubic root of 775411493 is about 918.7078161143.

The spelling of 775411493 in words is "seven hundred seventy-five million, four hundred eleven thousand, four hundred ninety-three".