16477789 has 2 divisors, whose sum is σ = 16477790. Its totient is φ = 16477788.

The previous prime is 16477781. The next prime is 16477793. The reversal of 16477789 is 98777461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14100025 + 2377764 = 3755^2 + 1542^2 .

It is a cyclic number.

It is not a de Polignac number, because 16477789 - 2³ = 16477781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16477781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8238894 + 8238895.

It is an arithmetic number, because the mean of its divisors is an integer number (8238895).

Almost surely, 2^16477789 is an apocalyptic number.

It is an amenable number.

16477789 is a deficient number, since it is larger than the sum of its proper divisors (1).

16477789 is an equidigital number, since it uses as much as digits as its factorization.

16477789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 49.

The square root of 16477789 is about 4059.2842965232. The cubic root of 16477789 is about 254.4678843685.

The spelling of 16477789 in words is "sixteen million, four hundred seventy-seven thousand, seven hundred eighty-nine".