49023716569 has 3 divisors (see below), whose sum is σ = 49023937983. Its totient is φ = 49023495156.

The previous prime is 49023716557. The next prime is 49023716591. The reversal of 49023716569 is 96561732094.

It is a happy number.

The square root of 49023716569 is 221413.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 15968113225 + 33055603344 = 126365^2 + 181812^2 .

It is not a de Polignac number, because 49023716569 - 2²¹ = 49021619417 is a prime.

It is a super-2 number, since 2×49023716569² (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 (49023716369) 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 2 ways as a sum of consecutive naturals, for example, 110707 + ... + 332119.

It is an arithmetic number, because the mean of its divisors is an integer number (16341312661).

Almost surely, 2^49023716569 is an apocalyptic number.

49023716569 is the 221413-rd square number.

49023716569 is the 110707-th centered octagonal number.

It is an amenable number.

49023716569 is a deficient number, since it is larger than the sum of its proper divisors (221414).

49023716569 is an frugal number, since it uses more digits than its factorization.

49023716569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442826 (or 221413 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 49023716569 in words is "forty-nine billion, twenty-three million, seven hundred sixteen thousand, five hundred sixty-nine".