4921623 has 12 divisors (see below), whose sum is σ = 8124688. Its totient is φ = 2812320.

The previous prime is 4921613. The next prime is 4921643. The reversal of 4921623 is 3261294.

It is not a de Polignac number, because 4921623 - 2⁴ = 4921607 is a prime.

It is a d-powerful number, because it can be written as 4⁶ + 9⁷ + 2 + 1 + 6⁴ + 2¹⁷ + 3⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4921613) 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 11 ways as a sum of consecutive naturals, for example, 38998 + ... + 39123.

Almost surely, 2^4921623 is an apocalyptic number.

4921623 is a deficient number, since it is larger than the sum of its proper divisors (3203065).

4921623 is a wasteful number, since it uses less digits than its factorization.

4921623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78134 (or 78131 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 4921623 is about 2218.4731235695. The cubic root of 4921623 is about 170.0993997700.

The spelling of 4921623 in words is "four million, nine hundred twenty-one thousand, six hundred twenty-three".