8452779431 has 2 divisors, whose sum is σ = 8452779432. Its totient is φ = 8452779430.

The previous prime is 8452779421. The next prime is 8452779443. The reversal of 8452779431 is 1349772548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8452779431 - 2¹⁴ = 8452763047 is a prime.

It is a super-2 number, since 2×8452779431² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8452779431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8452779421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4226389715 + 4226389716.

It is an arithmetic number, because the mean of its divisors is an integer number (4226389716).

Almost surely, 2^8452779431 is an apocalyptic number.

8452779431 is a deficient number, since it is larger than the sum of its proper divisors (1).

8452779431 is an equidigital number, since it uses as much as digits as its factorization.

8452779431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The square root of 8452779431 is about 91938.9984228673. The cubic root of 8452779431 is about 2037.0413530788.

The spelling of 8452779431 in words is "eight billion, four hundred fifty-two million, seven hundred seventy-nine thousand, four hundred thirty-one".