4046621 has 4 divisors (see below), whose sum is σ = 4057212. Its totient is φ = 4036032.

The previous prime is 4046593. The next prime is 4046657. The reversal of 4046621 is 1266404.

Added to its reverse (1266404) it gives a square (5313025 = 2305²).

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 2805625 + 1240996 = 1675^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 4046621 - 2¹⁰ = 4045597 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 (4046671) 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, 4700 + ... + 5493.

It is an arithmetic number, because the mean of its divisors is an integer number (1014303).

Almost surely, 2^4046621 is an apocalyptic number.

It is an amenable number.

4046621 is a deficient number, since it is larger than the sum of its proper divisors (10591).

4046621 is a wasteful number, since it uses less digits than its factorization.

4046621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10590.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 4046621 is about 2011.6214852700. The cubic root of 4046621 is about 159.3544431259.

Adding to 4046621 its reverse (1266404), we get a square (5313025 = 2305²).

The spelling of 4046621 in words is "four million, forty-six thousand, six hundred twenty-one".