4990001 has 4 divisors (see below), whose sum is σ = 5162100. Its totient is φ = 4817904.

The previous prime is 4989997. The next prime is 4990019. The reversal of 4990001 is 1000994.

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 3701776 + 1288225 = 1924^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 4990001 - 2² = 4989997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4990031) 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, 86006 + ... + 86063.

It is an arithmetic number, because the mean of its divisors is an integer number (1290525).

Almost surely, 2^4990001 is an apocalyptic number.

It is an amenable number.

4990001 is a deficient number, since it is larger than the sum of its proper divisors (172099).

4990001 is a wasteful number, since it uses less digits than its factorization.

4990001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172098.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 4990001 is about 2233.8310141996. The cubic root of 4990001 is about 170.8835316028.

Adding to 4990001 its reverse (1000994), we get a palindrome (5990995).

The spelling of 4990001 in words is "four million, nine hundred ninety thousand, one".