49478090869 has 2 divisors, whose sum is σ = 49478090870. Its totient is φ = 49478090868.

The previous prime is 49478090807. The next prime is 49478090873. The reversal of 49478090869 is 96809087494.

49478090869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24754302225 + 24723788644 = 157335^2 + 157238^2 .

It is a cyclic number.

It is not a de Polignac number, because 49478090869 - 2¹⁵ = 49478058101 is a prime.

It is a super-2 number, since 2×49478090869² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49478090869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49478090899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24739045434 + 24739045435.

It is an arithmetic number, because the mean of its divisors is an integer number (24739045435).

Almost surely, 2^49478090869 is an apocalyptic number.

It is an amenable number.

49478090869 is a deficient number, since it is larger than the sum of its proper divisors (1).

49478090869 is an equidigital number, since it uses as much as digits as its factorization.

49478090869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 49478090869 in words is "forty-nine billion, four hundred seventy-eight million, ninety thousand, eight hundred sixty-nine".