7438885 has 4 divisors (see below), whose sum is σ = 8926668. Its totient is φ = 5951104.

The previous prime is 7438841. The next prime is 7438891. The reversal of 7438885 is 5888347.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4726276 + 2712609 = 2174^2 + 1647^2 .

It is a cyclic number.

It is not a de Polignac number, because 7438885 - 2⁹ = 7438373 is a prime.

It is a Duffinian number.

7438885 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743884 + ... + 743893.

It is an arithmetic number, because the mean of its divisors is an integer number (2231667).

Almost surely, 2^7438885 is an apocalyptic number.

It is an amenable number.

7438885 is a deficient number, since it is larger than the sum of its proper divisors (1487783).

7438885 is a wasteful number, since it uses less digits than its factorization.

7438885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487782.

The product of its digits is 215040, while the sum is 43.

The square root of 7438885 is about 2727.4319423223. The cubic root of 7438885 is about 195.2102487928.

The spelling of 7438885 in words is "seven million, four hundred thirty-eight thousand, eight hundred eighty-five".