391129352 has 16 divisors (see below), whose sum is σ = 765253440. Its totient is φ = 187061776.

The previous prime is 391129339. The next prime is 391129357. The reversal of 391129352 is 253921193.

It is not an unprimeable number, because it can be changed into a prime (391129357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062668 + ... + 1063035.

It is an arithmetic number, because the mean of its divisors is an integer number (47828340).

Almost surely, 2^391129352 is an apocalyptic number.

It is an amenable number.

391129352 is a deficient number, since it is larger than the sum of its proper divisors (374124088).

391129352 is a wasteful number, since it uses less digits than its factorization.

391129352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125732 (or 2125728 counting only the distinct ones).

The product of its digits is 14580, while the sum is 35.

The square root of 391129352 is about 19776.9904687240. The cubic root of 391129352 is about 731.3189092098.

The spelling of 391129352 in words is "three hundred ninety-one million, one hundred twenty-nine thousand, three hundred fifty-two".