16406463 has 4 divisors (see below), whose sum is σ = 21875288. Its totient is φ = 10937640.

The previous prime is 16406459. The next prime is 16406473. The reversal of 16406463 is 36460461.

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

It is not a de Polignac number, because 16406463 - 2² = 16406459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16406463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16406473) 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, 2734408 + ... + 2734413.

It is an arithmetic number, because the mean of its divisors is an integer number (5468822).

Almost surely, 2^16406463 is an apocalyptic number.

16406463 is a deficient number, since it is larger than the sum of its proper divisors (5468825).

16406463 is an equidigital number, since it uses as much as digits as its factorization.

16406463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468824.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 16406463 is about 4050.4892297104. The cubic root of 16406463 is about 254.1001888430.

The spelling of 16406463 in words is "sixteen million, four hundred six thousand, four hundred sixty-three".