539168449 has 2 divisors, whose sum is σ = 539168450. Its totient is φ = 539168448.

The previous prime is 539168431. The next prime is 539168471. The reversal of 539168449 is 944861935.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539168400 + 49 = 23220^2 + 7^2 .

It is a cyclic number.

It is not a de Polignac number, because 539168449 - 2²³ = 530779841 is a prime.

It is not a weakly prime, because it can be changed into another prime (539168419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269584224 + 269584225.

It is an arithmetic number, because the mean of its divisors is an integer number (269584225).

Almost surely, 2^539168449 is an apocalyptic number.

It is an amenable number.

539168449 is a deficient number, since it is larger than the sum of its proper divisors (1).

539168449 is an equidigital number, since it uses as much as digits as its factorization.

539168449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 49.

The square root of 539168449 is about 23220.0010551249. The cubic root of 539168449 is about 813.9070745541.

Subtracting from 539168449 its sum of digits (49), we obtain a square (539168400 = 23220²).

It can be divided in two parts, 5391684 and 49, that multiplied together give a square (264192516 = 16254²).

The spelling of 539168449 in words is "five hundred thirty-nine million, one hundred sixty-eight thousand, four hundred forty-nine".