391136601 has 16 divisors (see below), whose sum is σ = 540302400. Its totient is φ = 251391168.

The previous prime is 391136573. The next prime is 391136609. The reversal of 391136601 is 106631193.

It is not a de Polignac number, because 391136601 - 2¹¹ = 391134553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (391136609) 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 15 ways as a sum of consecutive naturals, for example, 62890 + ... + 68828.

It is an arithmetic number, because the mean of its divisors is an integer number (33768900).

Almost surely, 2^391136601 is an apocalyptic number.

It is an amenable number.

391136601 is a deficient number, since it is larger than the sum of its proper divisors (149165799).

391136601 is a wasteful number, since it uses less digits than its factorization.

391136601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 391136601 is about 19777.1737364063. The cubic root of 391136601 is about 731.3234271508.

Adding to 391136601 its reverse (106631193), we get a palindrome (497767794).

The spelling of 391136601 in words is "three hundred ninety-one million, one hundred thirty-six thousand, six hundred one".