391395452 has 24 divisors (see below), whose sum is σ = 793820160. Its totient is φ = 165377520.

The previous prime is 391395451. The next prime is 391395469. The reversal of 391395452 is 254593193.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391395451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96452 + ... + 100427.

It is an arithmetic number, because the mean of its divisors is an integer number (33075840).

Almost surely, 2^391395452 is an apocalyptic number.

It is an amenable number.

391395452 is an abundant number, since it is smaller than the sum of its proper divisors (402424708).

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

391395452 is a wasteful number, since it uses less digits than its factorization.

391395452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196961 (or 196959 counting only the distinct ones).

The product of its digits is 145800, while the sum is 41.

The square root of 391395452 is about 19783.7168398661. The cubic root of 391395452 is about 731.4847195274.

The spelling of 391395452 in words is "three hundred ninety-one million, three hundred ninety-five thousand, four hundred fifty-two".