16299949 has 4 divisors (see below), whose sum is σ = 16314364. Its totient is φ = 16285536.

The previous prime is 16299947. The next prime is 16299971. The reversal of 16299949 is 94999261.

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 11437924 + 4862025 = 3382^2 + 2205^2 .

It is a cyclic number.

It is not a de Polignac number, because 16299949 - 2¹ = 16299947 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 (16299947) 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, 5352 + ... + 7825.

It is an arithmetic number, because the mean of its divisors is an integer number (4078591).

Almost surely, 2^16299949 is an apocalyptic number.

It is an amenable number.

16299949 is a deficient number, since it is larger than the sum of its proper divisors (14415).

16299949 is a wasteful number, since it uses less digits than its factorization.

16299949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14414.

The product of its digits is 314928, while the sum is 49.

The square root of 16299949 is about 4037.3195315704. The cubic root of 16299949 is about 253.5491049882.

The spelling of 16299949 in words is "sixteen million, two hundred ninety-nine thousand, nine hundred forty-nine".