38438555 has 4 divisors (see below), whose sum is σ = 46126272. Its totient is φ = 30750840.

The previous prime is 38438537. The next prime is 38438567. The reversal of 38438555 is 55583483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55583483 = 191 ⋅291013.

It is a de Polignac number, because none of the positive numbers 2^k-38438555 is a prime.

It is a Duffinian 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, 3843851 + ... + 3843860.

It is an arithmetic number, because the mean of its divisors is an integer number (11531568).

Almost surely, 2^38438555 is an apocalyptic number.

38438555 is a deficient number, since it is larger than the sum of its proper divisors (7687717).

38438555 is an equidigital number, since it uses as much as digits as its factorization.

38438555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7687716.

The product of its digits is 288000, while the sum is 41.

The square root of 38438555 is about 6199.8834666468. The cubic root of 38438555 is about 337.4859399721.

The spelling of 38438555 in words is "thirty-eight million, four hundred thirty-eight thousand, five hundred fifty-five".