38785091 has 4 divisors (see below), whose sum is σ = 38799432. Its totient is φ = 38770752.

The previous prime is 38785079. The next prime is 38785141. The reversal of 38785091 is 19058783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19058783 = 613 ⋅31091.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38785091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38785001) 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, 1745 + ... + 8978.

It is an arithmetic number, because the mean of its divisors is an integer number (9699858).

Almost surely, 2^38785091 is an apocalyptic number.

38785091 is a deficient number, since it is larger than the sum of its proper divisors (14341).

38785091 is a wasteful number, since it uses less digits than its factorization.

38785091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14340.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 38785091 is about 6227.7677381225. The cubic root of 38785091 is about 338.4970890384.

The spelling of 38785091 in words is "thirty-eight million, seven hundred eighty-five thousand, ninety-one".