10778389 has 2 divisors, whose sum is σ = 10778390. Its totient is φ = 10778388.

The previous prime is 10778387. The next prime is 10778393. The reversal of 10778389 is 98387701.

10778389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9891025 + 887364 = 3145^2 + 942^2 .

It is a cyclic number.

It is not a de Polignac number, because 10778389 - 2¹ = 10778387 is a prime.

Together with 10778387, 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 (10778387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5389194 + 5389195.

It is an arithmetic number, because the mean of its divisors is an integer number (5389195).

Almost surely, 2^10778389 is an apocalyptic number.

It is an amenable number.

10778389 is a deficient number, since it is larger than the sum of its proper divisors (1).

10778389 is an equidigital number, since it uses as much as digits as its factorization.

10778389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 10778389 is about 3283.0456895998. The cubic root of 10778389 is about 220.8943551630.

The spelling of 10778389 in words is "ten million, seven hundred seventy-eight thousand, three hundred eighty-nine".