38940591 has 32 divisors (see below), whose sum is σ = 57620160. Its totient is φ = 23281664.

The previous prime is 38940563. The next prime is 38940607. The reversal of 38940591 is 19504983.

It is not a de Polignac number, because 38940591 - 2⁶ = 38940527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38940511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167011 + ... + 167243.

It is an arithmetic number, because the mean of its divisors is an integer number (1800630).

Almost surely, 2^38940591 is an apocalyptic number.

38940591 is a deficient number, since it is larger than the sum of its proper divisors (18679569).

38940591 is a wasteful number, since it uses less digits than its factorization.

38940591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 38940591 is about 6240.2396588593. The cubic root of 38940591 is about 338.9488615093.

The spelling of 38940591 in words is "thirty-eight million, nine hundred forty thousand, five hundred ninety-one".