16387417 has 4 divisors (see below), whose sum is σ = 16396240. Its totient is φ = 16378596.

The previous prime is 16387409. The next prime is 16387433. The reversal of 16387417 is 71478361.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16387417 - 2³ = 16387409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16387447) 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, 423 + ... + 5740.

It is an arithmetic number, because the mean of its divisors is an integer number (4099060).

Almost surely, 2^16387417 is an apocalyptic number.

It is an amenable number.

16387417 is a deficient number, since it is larger than the sum of its proper divisors (8823).

16387417 is an equidigital number, since it uses as much as digits as its factorization.

16387417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8822.

The product of its digits is 28224, while the sum is 37.

The square root of 16387417 is about 4048.1374729621. The cubic root of 16387417 is about 254.0018238239.

The spelling of 16387417 in words is "sixteen million, three hundred eighty-seven thousand, four hundred seventeen".