39456450049 has 2 divisors, whose sum is σ = 39456450050. Its totient is φ = 39456450048.

The previous prime is 39456450001. The next prime is 39456450071. The reversal of 39456450049 is 94005465493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37659283600 + 1797166449 = 194060^2 + 42393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39456450049 is a prime.

It is a super-2 number, since 2×39456450049² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39456449984 and 39456450011.

It is not a weakly prime, because it can be changed into another prime (39456457049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19728225024 + 19728225025.

It is an arithmetic number, because the mean of its divisors is an integer number (19728225025).

Almost surely, 2^39456450049 is an apocalyptic number.

It is an amenable number.

39456450049 is a deficient number, since it is larger than the sum of its proper divisors (1).

39456450049 is an equidigital number, since it uses as much as digits as its factorization.

39456450049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 39456450049 in words is "thirty-nine billion, four hundred fifty-six million, four hundred fifty thousand, forty-nine".