4921907 has 4 divisors (see below), whose sum is σ = 5002656. Its totient is φ = 4841160.

The previous prime is 4921883. The next prime is 4921913. The reversal of 4921907 is 7091294.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4921907 - 2¹⁸ = 4659763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4921607) 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 3 ways as a sum of consecutive naturals, for example, 40283 + ... + 40404.

It is an arithmetic number, because the mean of its divisors is an integer number (1250664).

Almost surely, 2^4921907 is an apocalyptic number.

4921907 is a deficient number, since it is larger than the sum of its proper divisors (80749).

4921907 is an equidigital number, since it uses as much as digits as its factorization.

4921907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80748.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 4921907 is about 2218.5371306336. The cubic root of 4921907 is about 170.1026715430.

The spelling of 4921907 in words is "four million, nine hundred twenty-one thousand, nine hundred seven".