16780039 has 8 divisors (see below), whose sum is σ = 17121312. Its totient is φ = 16442400.

The previous prime is 16780031. The next prime is 16780051. The reversal of 16780039 is 93008761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16780039 - 2³ = 16780031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16779986 and 16780013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16780031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9597 + ... + 11209.

It is an arithmetic number, because the mean of its divisors is an integer number (2140164).

Almost surely, 2^16780039 is an apocalyptic number.

16780039 is a deficient number, since it is larger than the sum of its proper divisors (341273).

16780039 is a wasteful number, since it uses less digits than its factorization.

16780039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 16780039 is about 4096.3445899973. The cubic root of 16780039 is about 256.0143577152.

The spelling of 16780039 in words is "sixteen million, seven hundred eighty thousand, thirty-nine".