490001101 has 4 divisors (see below), whose sum is σ = 503244412. Its totient is φ = 476757792.

The previous prime is 490001087. The next prime is 490001111. The reversal of 490001101 is 101100094.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101100094 = 2 ⋅50550047.

It can be written as a sum of positive squares in 2 ways, for example, as 409091076 + 80910025 = 20226^2 + 8995^2 .

It is a cyclic number.

It is not a de Polignac number, because 490001101 - 2⁵ = 490001069 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 (490001111) 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, 6621600 + ... + 6621673.

It is an arithmetic number, because the mean of its divisors is an integer number (125811103).

Almost surely, 2^490001101 is an apocalyptic number.

It is an amenable number.

490001101 is a deficient number, since it is larger than the sum of its proper divisors (13243311).

490001101 is a wasteful number, since it uses less digits than its factorization.

490001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13243310.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 490001101 is about 22135.9684902197. The cubic root of 490001101 is about 788.3741067858.

Adding to 490001101 its reverse (101100094), we get a palindrome (591101195).

The spelling of 490001101 in words is "four hundred ninety million, one thousand, one hundred one".