13438390 has 16 divisors (see below), whose sum is σ = 27644832. Its totient is φ = 4607424.

The previous prime is 13438387. The next prime is 13438393. The reversal of 13438390 is 9383431.

It is an interprime number because it is at equal distance from previous prime (13438387) and next prime (13438393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95919 + ... + 96058.

It is an arithmetic number, because the mean of its divisors is an integer number (1727802).

Almost surely, 2^13438390 is an apocalyptic number.

13438390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13438390 is an abundant number, since it is smaller than the sum of its proper divisors (14206442).

13438390 is a wasteful number, since it uses less digits than its factorization.

13438390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191991.

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

The square root of 13438390 is about 3665.8409676362. The cubic root of 13438390 is about 237.7473839672.

The spelling of 13438390 in words is "thirteen million, four hundred thirty-eight thousand, three hundred ninety".