16898749 has 4 divisors (see below), whose sum is σ = 19312864. Its totient is φ = 14484636.

The previous prime is 16898741. The next prime is 16898759. The reversal of 16898749 is 94789861.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 94789861 = 367 ⋅258283.

It is a cyclic number.

It is not a de Polignac number, because 16898749 - 2³ = 16898741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16898696 and 16898705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16898741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207047 + ... + 1207060.

It is an arithmetic number, because the mean of its divisors is an integer number (4828216).

Almost surely, 2^16898749 is an apocalyptic number.

It is an amenable number.

16898749 is a deficient number, since it is larger than the sum of its proper divisors (2414115).

16898749 is an equidigital number, since it uses as much as digits as its factorization.

16898749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414114.

The product of its digits is 870912, while the sum is 52.

The square root of 16898749 is about 4110.8088011972. The cubic root of 16898749 is about 256.6166621726.

The spelling of 16898749 in words is "sixteen million, eight hundred ninety-eight thousand, seven hundred forty-nine".