38775091 has 4 divisors (see below), whose sum is σ = 38788552. Its totient is φ = 38761632.

The previous prime is 38775089. The next prime is 38775097. The reversal of 38775091 is 19057783.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19057783 = 1051 ⋅18133.

It is a cyclic number.

It is not a de Polignac number, because 38775091 - 2¹ = 38775089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38775097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465 + ... + 8818.

It is an arithmetic number, because the mean of its divisors is an integer number (9697138).

Almost surely, 2^38775091 is an apocalyptic number.

38775091 is a deficient number, since it is larger than the sum of its proper divisors (13461).

38775091 is an equidigital number, since it uses as much as digits as its factorization.

38775091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13460.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 38775091 is about 6226.9648304772. The cubic root of 38775091 is about 338.4679948533.

The spelling of 38775091 in words is "thirty-eight million, seven hundred seventy-five thousand, ninety-one".