4621909 has 8 divisors (see below), whose sum is σ = 4975128. Its totient is φ = 4277760.

The previous prime is 4621891. The next prime is 4621913. The reversal of 4621909 is 9091264.

4621909 = T₂₁₂ + T₂₁₃ + ... + T₃₃₃.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 521284 + 4100625 = 722^2 + 2025^2 .

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 4621909 - 2¹³ = 4613717 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 (4621949) 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, 1192 + ... + 3265.

It is an arithmetic number, because the mean of its divisors is an integer number (621891).

Almost surely, 2^4621909 is an apocalyptic number.

It is an amenable number.

4621909 is a deficient number, since it is larger than the sum of its proper divisors (353219).

4621909 is a wasteful number, since it uses less digits than its factorization.

4621909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 4621909 is about 2149.8625537462. The cubic root of 4621909 is about 166.5739675619.

The spelling of 4621909 in words is "four million, six hundred twenty-one thousand, nine hundred nine".