39549226449 has 4 divisors (see below), whose sum is σ = 52732301936. Its totient is φ = 26366150964.

The previous prime is 39549226447. The next prime is 39549226463. The reversal of 39549226449 is 94462294593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 39549226449 - 2¹ = 39549226447 is a prime.

It is a super-2 number, since 2×39549226449² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39549226447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6591537739 + ... + 6591537744.

It is an arithmetic number, because the mean of its divisors is an integer number (13183075484).

Almost surely, 2^39549226449 is an apocalyptic number.

It is an amenable number.

39549226449 is a deficient number, since it is larger than the sum of its proper divisors (13183075487).

39549226449 is a wasteful number, since it uses less digits than its factorization.

39549226449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13183075486.

The product of its digits is 16796160, while the sum is 57.

The spelling of 39549226449 in words is "thirty-nine billion, five hundred forty-nine million, two hundred twenty-six thousand, four hundred forty-nine".