49906569 has 4 divisors (see below), whose sum is σ = 66542096. Its totient is φ = 33271044.

The previous prime is 49906561. The next prime is 49906579. The reversal of 49906569 is 96560994.

It is a happy number.

49906569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 49906569 - 2³ = 49906561 is a prime.

It is a super-2 number, since 2×49906569² = 4981331258703522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49906561) 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 3 ways as a sum of consecutive naturals, for example, 8317759 + ... + 8317764.

It is an arithmetic number, because the mean of its divisors is an integer number (16635524).

Almost surely, 2^49906569 is an apocalyptic number.

It is an amenable number.

49906569 is a deficient number, since it is larger than the sum of its proper divisors (16635527).

49906569 is a wasteful number, since it uses less digits than its factorization.

49906569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16635526.

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 49906569 is about 7064.4581533193. The cubic root of 49906569 is about 368.1735382877.

The spelling of 49906569 in words is "forty-nine million, nine hundred six thousand, five hundred sixty-nine".