391036 has 12 divisors (see below), whose sum is σ = 708120. Its totient is φ = 188720.

The previous prime is 391031. The next prime is 391049. The reversal of 391036 is 630193.

It is a junction number, because it is equal to n+sod(n) for n = 390998 and 391016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391031) 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, 1570 + ... + 1801.

It is an arithmetic number, because the mean of its divisors is an integer number (59010).

2³⁹¹⁰³⁶ is an apocalyptic number.

It is an amenable number.

391036 is a deficient number, since it is larger than the sum of its proper divisors (317084).

391036 is a wasteful number, since it uses less digits than its factorization.

391036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404 (or 3402 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 391036 is about 625.3287135579. The cubic root of 391036 is about 73.1260722564.

It can be divided in two parts, 39 and 1036, that multiplied together give a palindrome (40404).

The spelling of 391036 in words is "three hundred ninety-one thousand, thirty-six".