4909438 has 4 divisors (see below), whose sum is σ = 7364160. Its totient is φ = 2454718.

The previous prime is 4909427. The next prime is 4909441. The reversal of 4909438 is 8349094.

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

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 4909397 and 4909406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1227358 + ... + 1227361.

It is an arithmetic number, because the mean of its divisors is an integer number (1841040).

Almost surely, 2^4909438 is an apocalyptic number.

4909438 is a deficient number, since it is larger than the sum of its proper divisors (2454722).

4909438 is a wasteful number, since it uses less digits than its factorization.

4909438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454721.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 4909438 is about 2215.7251634623. The cubic root of 4909438 is about 169.9589058687.

The spelling of 4909438 in words is "four million, nine hundred nine thousand, four hundred thirty-eight".