391422348 has 48 divisors (see below), whose sum is σ = 1074497760. Its totient is φ = 122798592.

The previous prime is 391422341. The next prime is 391422359. The reversal of 391422348 is 843224193.

391422348 is a `hidden beast` number, since 391 + 4 + 223 + 48 = 666.

It is a super-2 number, since 2×391422348² = 306422909027666208, which contains 22 as substring.

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 (391422341) 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, 104761 + ... + 108432.

It is an arithmetic number, because the mean of its divisors is an integer number (22385370).

Almost surely, 2^391422348 is an apocalyptic number.

It is an amenable number.

391422348 is an abundant number, since it is smaller than the sum of its proper divisors (683075412).

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

391422348 is a wasteful number, since it uses less digits than its factorization.

391422348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213223 (or 213215 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 391422348 is about 19784.3965791226. The cubic root of 391422348 is about 731.5014745870.

It can be divided in two parts, 3914 and 22348, that added together give a palindrome (26262).

The spelling of 391422348 in words is "three hundred ninety-one million, four hundred twenty-two thousand, three hundred forty-eight".