391841352 has 48 divisors (see below), whose sum is σ = 1212843840. Its totient is φ = 111954528.

The previous prime is 391841341. The next prime is 391841353. The reversal of 391841352 is 253148193.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (391841353) 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 11 ways as a sum of consecutive naturals, for example, 388228 + ... + 389235.

It is an arithmetic number, because the mean of its divisors is an integer number (25267580).

Almost surely, 2^391841352 is an apocalyptic number.

It is an amenable number.

391841352 is an abundant number, since it is smaller than the sum of its proper divisors (821002488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

391841352 is a wasteful number, since it uses less digits than its factorization.

391841352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777482 (or 777475 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 391841352 is about 19794.9830007505. The cubic root of 391841352 is about 731.7623971291.

The spelling of 391841352 in words is "three hundred ninety-one million, eight hundred forty-one thousand, three hundred fifty-two".