49969309 has 12 divisors (see below), whose sum is σ = 54762708. Its totient is φ = 45325440.

The previous prime is 49969279. The next prime is 49969313. The reversal of 49969309 is 90396994.

It can be written as a sum of positive squares in 6 ways, for example, as 11492100 + 38477209 = 3390^2 + 6203^2 .

It is not a de Polignac number, because 49969309 - 2¹³ = 49961117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49969369) 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, 47857 + ... + 48889.

It is an arithmetic number, because the mean of its divisors is an integer number (4563559).

Almost surely, 2^49969309 is an apocalyptic number.

It is an amenable number.

49969309 is a deficient number, since it is larger than the sum of its proper divisors (4793399).

49969309 is a wasteful number, since it uses less digits than its factorization.

49969309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168 (or 1107 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 49.

The square root of 49969309 is about 7068.8972973159. The cubic root of 49969309 is about 368.3277566955.

The spelling of 49969309 in words is "forty-nine million, nine hundred sixty-nine thousand, three hundred nine".