49578769 has 2 divisors, whose sum is σ = 49578770. Its totient is φ = 49578768.

The previous prime is 49578757. The next prime is 49578773. The reversal of 49578769 is 96787594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48790225 + 788544 = 6985^2 + 888^2 .

It is a cyclic number.

It is not a de Polignac number, because 49578769 - 2⁹ = 49578257 is a prime.

It is a super-2 number, since 2×49578769² = 4916108671110722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49572769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24789384 + 24789385.

It is an arithmetic number, because the mean of its divisors is an integer number (24789385).

Almost surely, 2^49578769 is an apocalyptic number.

It is an amenable number.

49578769 is a deficient number, since it is larger than the sum of its proper divisors (1).

49578769 is an equidigital number, since it uses as much as digits as its factorization.

49578769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 55.

The square root of 49578769 is about 7041.2192836184. The cubic root of 49578769 is about 367.3656787719.

The spelling of 49578769 in words is "forty-nine million, five hundred seventy-eight thousand, seven hundred sixty-nine".