16471393 has 4 divisors (see below), whose sum is σ = 16782228. Its totient is φ = 16160560.

The previous prime is 16471379. The next prime is 16471409. The reversal of 16471393 is 39317461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13454224 + 3017169 = 3668^2 + 1737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16471393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16471303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155338 + ... + 155443.

It is an arithmetic number, because the mean of its divisors is an integer number (4195557).

Almost surely, 2^16471393 is an apocalyptic number.

It is an amenable number.

16471393 is a deficient number, since it is larger than the sum of its proper divisors (310835).

16471393 is an equidigital number, since it uses as much as digits as its factorization.

16471393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310834.

The product of its digits is 13608, while the sum is 34.

The square root of 16471393 is about 4058.4963964503. The cubic root of 16471393 is about 254.4349554518.

The spelling of 16471393 in words is "sixteen million, four hundred seventy-one thousand, three hundred ninety-three".