5813939449 has 2 divisors, whose sum is σ = 5813939450. Its totient is φ = 5813939448.

The previous prime is 5813939387. The next prime is 5813939489. The reversal of 5813939449 is 9449393185.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4268270224 + 1545669225 = 65332^2 + 39315^2 .

It is a cyclic number.

It is not a de Polignac number, because 5813939449 - 2⁷ = 5813939321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5813939449.

It is not a weakly prime, because it can be changed into another prime (5813939489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2906969724 + 2906969725.

It is an arithmetic number, because the mean of its divisors is an integer number (2906969725).

Almost surely, 2^5813939449 is an apocalyptic number.

It is an amenable number.

5813939449 is a deficient number, since it is larger than the sum of its proper divisors (1).

5813939449 is an equidigital number, since it uses as much as digits as its factorization.

5813939449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 55.

The square root of 5813939449 is about 76249.1931039273. The cubic root of 5813939449 is about 1798.1399972778.

The spelling of 5813939449 in words is "five billion, eight hundred thirteen million, nine hundred thirty-nine thousand, four hundred forty-nine".