4923409 has 4 divisors (see below), whose sum is σ = 4962304. Its totient is φ = 4884516.

The previous prime is 4923397. The next prime is 4923419. The reversal of 4923409 is 9043294.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4923409 - 2¹³ = 4915217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4923419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19257 + ... + 19510.

It is an arithmetic number, because the mean of its divisors is an integer number (1240576).

Almost surely, 2^4923409 is an apocalyptic number.

It is an amenable number.

4923409 is a deficient number, since it is larger than the sum of its proper divisors (38895).

4923409 is a wasteful number, since it uses less digits than its factorization.

4923409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38894.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 4923409 is about 2218.8756161624. The cubic root of 4923409 is about 170.1199729825.

Subtracting 4923409 from its reverse (9043294), we obtain a triangular number (4119885 = T₂₈₇₀).

It can be divided in two parts, 49 and 23409, that multiplied together give a square (1147041 = 1071²).

The spelling of 4923409 in words is "four million, nine hundred twenty-three thousand, four hundred nine".