16974749 has 16 divisors (see below), whose sum is σ = 19206720. Its totient is φ = 14866560.

The previous prime is 16974719. The next prime is 16974761. The reversal of 16974749 is 94747961.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16974749 is a prime.

It is a super-2 number, since 2×16974749² = 576284207226002, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16974719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72737 + ... + 72969.

It is an arithmetic number, because the mean of its divisors is an integer number (1200420).

Almost surely, 2^16974749 is an apocalyptic number.

It is an amenable number.

16974749 is a deficient number, since it is larger than the sum of its proper divisors (2231971).

16974749 is a wasteful number, since it uses less digits than its factorization.

16974749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460.

The product of its digits is 381024, while the sum is 47.

The square root of 16974749 is about 4120.0423541512. The cubic root of 16974749 is about 257.0007872919. Note that the first 3 decimals are identical.

It can be divided in two parts, 1697 and 4749, that added together give a palindrome (6446).

The spelling of 16974749 in words is "sixteen million, nine hundred seventy-four thousand, seven hundred forty-nine".