16474949 has 4 divisors (see below), whose sum is σ = 16497036. Its totient is φ = 16452864.

The previous prime is 16474943. The next prime is 16474999. The reversal of 16474949 is 94947461.

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 2464900 + 14010049 = 1570^2 + 3743^2 .

It is a cyclic number.

It is not a de Polignac number, because 16474949 - 2⁴ = 16474933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16474943) 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, 9884 + ... + 11429.

It is an arithmetic number, because the mean of its divisors is an integer number (4124259).

Almost surely, 2^16474949 is an apocalyptic number.

It is an amenable number.

16474949 is a deficient number, since it is larger than the sum of its proper divisors (22087).

16474949 is an equidigital number, since it uses as much as digits as its factorization.

16474949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22086.

The product of its digits is 217728, while the sum is 44.

The square root of 16474949 is about 4058.9344660884. The cubic root of 16474949 is about 254.4532640754.

The spelling of 16474949 in words is "sixteen million, four hundred seventy-four thousand, nine hundred forty-nine".