10778399 has 2 divisors, whose sum is σ = 10778400. Its totient is φ = 10778398.

The previous prime is 10778393. The next prime is 10778407. The reversal of 10778399 is 99387701.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10778399 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10778393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5389199 + 5389200.

It is an arithmetic number, because the mean of its divisors is an integer number (5389200).

Almost surely, 2^10778399 is an apocalyptic number.

10778399 is a deficient number, since it is larger than the sum of its proper divisors (1).

10778399 is an equidigital number, since it uses as much as digits as its factorization.

10778399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 10778399 is about 3283.0472125755. The cubic root of 10778399 is about 220.8944234769.

The spelling of 10778399 in words is "ten million, seven hundred seventy-eight thousand, three hundred ninety-nine".