39161091 has 16 divisors (see below), whose sum is σ = 54079488. Its totient is φ = 25180800.

The previous prime is 39161077. The next prime is 39161093. The reversal of 39161091 is 19016193.

It is not a de Polignac number, because 39161091 - 2⁹ = 39160579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39161093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39595 + ... + 40571.

It is an arithmetic number, because the mean of its divisors is an integer number (3379968).

Almost surely, 2^39161091 is an apocalyptic number.

39161091 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

39161091 is a deficient number, since it is larger than the sum of its proper divisors (14918397).

39161091 is a wasteful number, since it uses less digits than its factorization.

39161091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 39161091 is about 6257.8823095357. The cubic root of 39161091 is about 339.5874205421.

The spelling of 39161091 in words is "thirty-nine million, one hundred sixty-one thousand, ninety-one".