38438465 has 12 divisors (see below), whose sum is σ = 49739004. Its totient is φ = 28348416.

The previous prime is 38438461. The next prime is 38438471. The reversal of 38438465 is 56483483.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 5180176 + 33258289 = 2276^2 + 5767^2 .

It is not a de Polignac number, because 38438465 - 2² = 38438461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38438461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49601 + ... + 50369.

It is an arithmetic number, because the mean of its divisors is an integer number (4144917).

Almost surely, 2^38438465 is an apocalyptic number.

It is an amenable number.

38438465 is a deficient number, since it is larger than the sum of its proper divisors (11300539).

38438465 is an frugal number, since it uses more digits than its factorization.

38438465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556 (or 787 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 38438465 is about 6199.8762084416. The cubic root of 38438465 is about 337.4856765755.

The spelling of 38438465 in words is "thirty-eight million, four hundred thirty-eight thousand, four hundred sixty-five".