391150 has 12 divisors (see below), whose sum is σ = 727632. Its totient is φ = 156440.

The previous prime is 391133. The next prime is 391151. The reversal of 391150 is 51193.

391150 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391151) by changing a digit.

391150 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3862 + ... + 3961.

It is an arithmetic number, because the mean of its divisors is an integer number (60636).

2³⁹¹¹⁵⁰ is an apocalyptic number.

391150 is a deficient number, since it is larger than the sum of its proper divisors (336482).

391150 is a wasteful number, since it uses less digits than its factorization.

391150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7835 (or 7830 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 391150 is about 625.4198589748. The cubic root of 391150 is about 73.1331777934.

It can be divided in two parts, 39 and 1150, that multiplied together give a triangular number (44850 = T₂₉₉).

The spelling of 391150 in words is "three hundred ninety-one thousand, one hundred fifty".