4690021 has 8 divisors (see below), whose sum is σ = 5533184. Its totient is φ = 3890160.

The previous prime is 4690001. The next prime is 4690027. The reversal of 4690021 is 1200964.

4690021 = 25² + 26² + ... + 241².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4690021 - 2¹³ = 4681829 is a prime.

It is a Duffinian number.

4690021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4689974 and 4690001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4690027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10590 + ... + 11023.

It is an arithmetic number, because the mean of its divisors is an integer number (691648).

Almost surely, 2^4690021 is an apocalyptic number.

It is an amenable number.

4690021 is a deficient number, since it is larger than the sum of its proper divisors (843163).

4690021 is a wasteful number, since it uses less digits than its factorization.

4690021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21651.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 4690021 is about 2165.6456312149. The cubic root of 4690021 is about 167.3882346408.

Adding to 4690021 its reverse (1200964), we get a palindrome (5890985).

The spelling of 4690021 in words is "four million, six hundred ninety thousand, twenty-one".