49946439169 has 15 divisors (see below), whose sum is σ = 54970503985. Its totient is φ = 45381270220.

The previous prime is 49946439143. The next prime is 49946439173. The reversal of 49946439169 is 96193464994.

The square root of 49946439169 is 223487.

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

It is not a de Polignac number, because 49946439169 - 2⁷ = 49946439041 is a prime.

It is a super-2 number, since 2×49946439169² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49946439169.

It is not an unprimeable number, because it can be changed into a prime (49946439119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 27041004 + ... + 27042850.

Almost surely, 2^49946439169 is an apocalyptic number.

49946439169 is the 223487-th square number.

49946439169 is the 111744-th centered octagonal number.

It is an amenable number.

49946439169 is a deficient number, since it is larger than the sum of its proper divisors (5024064816).

49946439169 is an frugal number, since it uses more digits than its factorization.

49946439169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738 (or 1858 counting only the distinct ones).

The product of its digits is 45349632, while the sum is 64.

Multiplying 49946439169 by its sum of digits (64), we get a square (3196572106816 = 1787896²).

The spelling of 49946439169 in words is "forty-nine billion, nine hundred forty-six million, four hundred thirty-nine thousand, one hundred sixty-nine".