48778789 has 2 divisors, whose sum is σ = 48778790. Its totient is φ = 48778788.

The previous prime is 48778777. The next prime is 48778799. The reversal of 48778789 is 98787784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48650625 + 128164 = 6975^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 48778789 - 2¹³ = 48770597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48778739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24389394 + 24389395.

It is an arithmetic number, because the mean of its divisors is an integer number (24389395).

Almost surely, 2^48778789 is an apocalyptic number.

It is an amenable number.

48778789 is a deficient number, since it is larger than the sum of its proper divisors (1).

48778789 is an equidigital number, since it uses as much as digits as its factorization.

48778789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6322176, while the sum is 58.

The square root of 48778789 is about 6984.1813407156. The cubic root of 48778789 is about 365.3790744900.

The spelling of 48778789 in words is "forty-eight million, seven hundred seventy-eight thousand, seven hundred eighty-nine".