4777921 has 8 divisors (see below), whose sum is σ = 4935744. Its totient is φ = 4621680.

The previous prime is 4777909. The next prime is 4777933. The reversal of 4777921 is 1297774.

It is an interprime number because it is at equal distance from previous prime (4777909) and next prime (4777933).

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 4777921 - 2⁷ = 4777793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4777961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9486 + ... + 9976.

It is an arithmetic number, because the mean of its divisors is an integer number (616968).

Almost surely, 2^4777921 is an apocalyptic number.

It is an amenable number.

4777921 is a deficient number, since it is larger than the sum of its proper divisors (157823).

4777921 is a wasteful number, since it uses less digits than its factorization.

4777921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791.

The product of its digits is 24696, while the sum is 37.

The square root of 4777921 is about 2185.8456029647. The cubic root of 4777921 is about 168.4274945093.

The spelling of 4777921 in words is "four million, seven hundred seventy-seven thousand, nine hundred twenty-one".