8791438 has 4 divisors (see below), whose sum is σ = 13187160. Its totient is φ = 4395718.

The previous prime is 8791429. The next prime is 8791457. The reversal of 8791438 is 8341978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8341978 = 2 ⋅4170989.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 8791438.

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, 2197858 + ... + 2197861.

It is an arithmetic number, because the mean of its divisors is an integer number (3296790).

Almost surely, 2^8791438 is an apocalyptic number.

8791438 is a deficient number, since it is larger than the sum of its proper divisors (4395722).

8791438 is a wasteful number, since it uses less digits than its factorization.

8791438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395721.

The product of its digits is 48384, while the sum is 40.

The square root of 8791438 is about 2965.0359188381. The cubic root of 8791438 is about 206.3890439220.

It can be divided in two parts, 8791 and 438, that added together give a palindrome (9229).

The spelling of 8791438 in words is "eight million, seven hundred ninety-one thousand, four hundred thirty-eight".