49208869 has 2 divisors, whose sum is σ = 49208870. Its totient is φ = 49208868.

The previous prime is 49208867. The next prime is 49208881. The reversal of 49208869 is 96880294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44957025 + 4251844 = 6705^2 + 2062^2 .

It is a cyclic number.

It is not a de Polignac number, because 49208869 - 2¹ = 49208867 is a prime.

It is a super-2 number, since 2×49208869² = 4843025576518322, which contains 22 as substring.

Together with 49208867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49208867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24604434 + 24604435.

It is an arithmetic number, because the mean of its divisors is an integer number (24604435).

Almost surely, 2^49208869 is an apocalyptic number.

It is an amenable number.

49208869 is a deficient number, since it is larger than the sum of its proper divisors (1).

49208869 is an equidigital number, since it uses as much as digits as its factorization.

49208869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 49208869 is about 7014.9033492985. The cubic root of 49208869 is about 366.4497765058.

The spelling of 49208869 in words is "forty-nine million, two hundred eight thousand, eight hundred sixty-nine".