391148 has 6 divisors (see below), whose sum is σ = 684516. Its totient is φ = 195572.

The previous prime is 391133. The next prime is 391151. The reversal of 391148 is 841193.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 391148.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48890 + ... + 48897.

It is an arithmetic number, because the mean of its divisors is an integer number (114086).

2³⁹¹¹⁴⁸ is an apocalyptic number.

It is an amenable number.

391148 is a deficient number, since it is larger than the sum of its proper divisors (293368).

391148 is a wasteful number, since it uses less digits than its factorization.

391148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97791 (or 97789 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 391148 is about 625.4182600468. The cubic root of 391148 is about 73.1330531467.

The spelling of 391148 in words is "three hundred ninety-one thousand, one hundred forty-eight".