16454749 has 4 divisors (see below), whose sum is σ = 16605820. Its totient is φ = 16303680.

The previous prime is 16454719. The next prime is 16454761. The reversal of 16454749 is 94745461.

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 12652249 + 3802500 = 3557^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 16454749 - 2⁵ = 16454717 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 (16454719) 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, 75372 + ... + 75589.

It is an arithmetic number, because the mean of its divisors is an integer number (4151455).

Almost surely, 2^16454749 is an apocalyptic number.

It is an amenable number.

16454749 is a deficient number, since it is larger than the sum of its proper divisors (151071).

16454749 is a wasteful number, since it uses less digits than its factorization.

16454749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151070.

The product of its digits is 120960, while the sum is 40.

The square root of 16454749 is about 4056.4453650949. The cubic root of 16454749 is about 254.3492261595.

The spelling of 16454749 in words is "sixteen million, four hundred fifty-four thousand, seven hundred forty-nine".