4718438 has 4 divisors (see below), whose sum is σ = 7077660. Its totient is φ = 2359218.

The previous prime is 4718437. The next prime is 4718443. The reversal of 4718438 is 8348174.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 4718398 and 4718407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4718437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1179608 + ... + 1179611.

It is an arithmetic number, because the mean of its divisors is an integer number (1769415).

Almost surely, 2^4718438 is an apocalyptic number.

4718438 is a deficient number, since it is larger than the sum of its proper divisors (2359222).

4718438 is a wasteful number, since it uses less digits than its factorization.

4718438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359221.

The product of its digits is 21504, while the sum is 35.

The square root of 4718438 is about 2172.1965841056. The cubic root of 4718438 is about 167.7256245107.

It can be divided in two parts, 47 and 18438, that multiplied together give a triangular number (866586 = T₁₃₁₆).

The spelling of 4718438 in words is "four million, seven hundred eighteen thousand, four hundred thirty-eight".