4126649 has 4 divisors (see below), whose sum is σ = 4142964. Its totient is φ = 4110336.

The previous prime is 4126621. The next prime is 4126651. The reversal of 4126649 is 9466214.

It is a happy number.

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 3258025 + 868624 = 1805^2 + 932^2 .

It is a cyclic number.

It is not a de Polignac number, because 4126649 - 2²⁰ = 3078073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4126049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7772 + ... + 8285.

It is an arithmetic number, because the mean of its divisors is an integer number (1035741).

Almost surely, 2^4126649 is an apocalyptic number.

It is an amenable number.

4126649 is a deficient number, since it is larger than the sum of its proper divisors (16315).

4126649 is a wasteful number, since it uses less digits than its factorization.

4126649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16314.

The product of its digits is 10368, while the sum is 32.

The square root of 4126649 is about 2031.4155163334. The cubic root of 4126649 is about 160.3980842552.

The spelling of 4126649 in words is "four million, one hundred twenty-six thousand, six hundred forty-nine".