39436516849 has 2 divisors, whose sum is σ = 39436516850. Its totient is φ = 39436516848.

The previous prime is 39436516837. The next prime is 39436516877. The reversal of 39436516849 is 94861563493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19787486224 + 19649030625 = 140668^2 + 140175^2 .

It is a cyclic number.

It is not a de Polignac number, because 39436516849 - 2¹⁵ = 39436484081 is a prime.

It is a super-2 number, since 2×39436516849² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39436516793 and 39436516802.

It is not a weakly prime, because it can be changed into another prime (39436516879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19718258424 + 19718258425.

It is an arithmetic number, because the mean of its divisors is an integer number (19718258425).

Almost surely, 2^39436516849 is an apocalyptic number.

It is an amenable number.

39436516849 is a deficient number, since it is larger than the sum of its proper divisors (1).

39436516849 is an equidigital number, since it uses as much as digits as its factorization.

39436516849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16796160, while the sum is 58.

The spelling of 39436516849 in words is "thirty-nine billion, four hundred thirty-six million, five hundred sixteen thousand, eight hundred forty-nine".