4901609 has 8 divisors (see below), whose sum is σ = 5105160. Its totient is φ = 4700416.

The previous prime is 4901581. The next prime is 4901623. The reversal of 4901609 is 9061094.

It can be written as a sum of positive squares in 4 ways, for example, as 3052009 + 1849600 = 1747^2 + 1360^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4901609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4901009) 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, 4529 + ... + 5505.

It is an arithmetic number, because the mean of its divisors is an integer number (638145).

Almost surely, 2^4901609 is an apocalyptic number.

It is an amenable number.

4901609 is a deficient number, since it is larger than the sum of its proper divisors (203551).

4901609 is a wasteful number, since it uses less digits than its factorization.

4901609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 4901609 is about 2213.9577683416. The cubic root of 4901609 is about 169.8685142461.

The spelling of 4901609 in words is "four million, nine hundred one thousand, six hundred nine".