16349477 has 4 divisors (see below), whose sum is σ = 16360800. Its totient is φ = 16338156.

The previous prime is 16349453. The next prime is 16349479. The reversal of 16349477 is 77494361.

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 16349477 - 2¹⁸ = 16087333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16349479) 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, 3113 + ... + 6510.

It is an arithmetic number, because the mean of its divisors is an integer number (4090200).

It is a Poulet number, since it divides 2^16349476-1.

Almost surely, 2^16349477 is an apocalyptic number.

It is an amenable number.

16349477 is a deficient number, since it is larger than the sum of its proper divisors (11323).

16349477 is an equidigital number, since it uses as much as digits as its factorization.

16349477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11322.

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

The square root of 16349477 is about 4043.4486518318. The cubic root of 16349477 is about 253.8056514434.

It can be divided in two parts, 1634 and 9477, that added together give a palindrome (11111).

The spelling of 16349477 in words is "sixteen million, three hundred forty-nine thousand, four hundred seventy-seven".