4921649 has 8 divisors (see below), whose sum is σ = 5046912. Its totient is φ = 4798080.

The previous prime is 4921643. The next prime is 4921667. The reversal of 4921649 is 9461294.

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-4921649 is a prime.

It is a d-powerful number, because it can be written as 4² + 9⁴ + 2¹⁷ + 1 + 6 + 4⁵ + 9⁷ .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4921643) 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, 6977 + ... + 7649.

It is an arithmetic number, because the mean of its divisors is an integer number (630864).

Almost surely, 2^4921649 is an apocalyptic number.

It is an amenable number.

4921649 is a deficient number, since it is larger than the sum of its proper divisors (125263).

4921649 is a wasteful number, since it uses less digits than its factorization.

4921649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847.

The product of its digits is 15552, while the sum is 35.

The square root of 4921649 is about 2218.4789834479. The cubic root of 4921649 is about 170.0996993037.

The spelling of 4921649 in words is "four million, nine hundred twenty-one thousand, six hundred forty-nine".