38740091 has 4 divisors (see below), whose sum is σ = 41720112. Its totient is φ = 35760072.

The previous prime is 38740087. The next prime is 38740103. The reversal of 38740091 is 19004783.

38740091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38740091 - 2² = 38740087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38740021) 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 3 ways as a sum of consecutive naturals, for example, 1489991 + ... + 1490016.

It is an arithmetic number, because the mean of its divisors is an integer number (10430028).

Almost surely, 2^38740091 is an apocalyptic number.

38740091 is a deficient number, since it is larger than the sum of its proper divisors (2980021).

38740091 is a wasteful number, since it uses less digits than its factorization.

38740091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980020.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 38740091 is about 6224.1538380731. The cubic root of 38740091 is about 338.3661257955.

The spelling of 38740091 in words is "thirty-eight million, seven hundred forty thousand, ninety-one".