39040891 has 8 divisors (see below), whose sum is σ = 41459040. Its totient is φ = 36636288.

The previous prime is 39040871. The next prime is 39040919. The reversal of 39040891 is 19804093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39040891 - 2¹³ = 39032699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39040871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2905 + ... + 9301.

It is an arithmetic number, because the mean of its divisors is an integer number (5182380).

Almost surely, 2^39040891 is an apocalyptic number.

39040891 is a deficient number, since it is larger than the sum of its proper divisors (2418149).

39040891 is a wasteful number, since it uses less digits than its factorization.

39040891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6773.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 39040891 is about 6248.2710408560. The cubic root of 39040891 is about 339.2396242935.

The spelling of 39040891 in words is "thirty-nine million, forty thousand, eight hundred ninety-one".