16394477 has 8 divisors (see below), whose sum is σ = 18937152. Its totient is φ = 14027200.

The previous prime is 16394471. The next prime is 16394491. The reversal of 16394477 is 77449361.

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

It is not a de Polignac number, because 16394477 - 2¹⁰ = 16393453 is a prime.

It is a super-2 number, since 2×16394477² = 537557752207058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16394471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43649 + ... + 44022.

It is an arithmetic number, because the mean of its divisors is an integer number (2367144).

Almost surely, 2^16394477 is an apocalyptic number.

16394477 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16394477 is a deficient number, since it is larger than the sum of its proper divisors (2542675).

16394477 is a wasteful number, since it uses less digits than its factorization.

16394477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87699.

The product of its digits is 127008, while the sum is 41.

The square root of 16394477 is about 4049.0093850225. The cubic root of 16394477 is about 254.0382948027.

It can be divided in two parts, 1639 and 4477, that added together give a palindrome (6116).

The spelling of 16394477 in words is "sixteen million, three hundred ninety-four thousand, four hundred seventy-seven".