16208977 has 4 divisors (see below), whose sum is σ = 16237936. Its totient is φ = 16180020.

The previous prime is 16208971. The next prime is 16208989. The reversal of 16208977 is 77980261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16208977 - 2²³ = 7820369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16208971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13623 + ... + 14764.

It is an arithmetic number, because the mean of its divisors is an integer number (4059484).

Almost surely, 2^16208977 is an apocalyptic number.

It is an amenable number.

16208977 is a deficient number, since it is larger than the sum of its proper divisors (28959).

16208977 is an equidigital number, since it uses as much as digits as its factorization.

16208977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28958.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 16208977 is about 4026.0373818433. The cubic root of 16208977 is about 253.0765285839.

The spelling of 16208977 in words is "sixteen million, two hundred eight thousand, nine hundred seventy-seven".