49879009 has 12 divisors (see below), whose sum is σ = 52957476. Its totient is φ = 46971648.

The previous prime is 49878979. The next prime is 49879073. The reversal of 49879009 is 90097894.

It can be written as a sum of positive squares in 2 ways, for example, as 19936225 + 29942784 = 4465^2 + 5472^2 .

It is not a de Polignac number, because 49879009 - 2⁹ = 49878497 is a prime.

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 49879009.

It is not an unprimeable number, because it can be changed into a prime (49871009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83817 + ... + 84409.

It is an arithmetic number, because the mean of its divisors is an integer number (4413123).

Almost surely, 2^49879009 is an apocalyptic number.

It is an amenable number.

49879009 is a deficient number, since it is larger than the sum of its proper divisors (3078467).

49879009 is a wasteful number, since it uses less digits than its factorization.

49879009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 49879009 is about 7062.5072743325. The cubic root of 49879009 is about 368.1057534162.

It can be divided in two parts, 498 and 79009, that added together give a cube (79507 = 43³).

The spelling of 49879009 in words is "forty-nine million, eight hundred seventy-nine thousand, nine".