13780799 has 2 divisors, whose sum is σ = 13780800. Its totient is φ = 13780798.

The previous prime is 13780787. The next prime is 13780813. The reversal of 13780799 is 99708731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13780799 - 2⁴ = 13780783 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 (13780759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6890399 + 6890400.

It is an arithmetic number, because the mean of its divisors is an integer number (6890400).

Almost surely, 2^13780799 is an apocalyptic number.

13780799 is a deficient number, since it is larger than the sum of its proper divisors (1).

13780799 is an equidigital number, since it uses as much as digits as its factorization.

13780799 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 13780799 is about 3712.2498568927. The cubic root of 13780799 is about 239.7497333312.

The spelling of 13780799 in words is "thirteen million, seven hundred eighty thousand, seven hundred ninety-nine".