391896 has 24 divisors (see below), whose sum is σ = 1061580. Its totient is φ = 130608.

The previous prime is 391891. The next prime is 391903. The reversal of 391896 is 698193.

391896 = T₃₀₉ + T₃₁₀ + ... + T₃₁₆.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 391896.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2650 + ... + 2793.

2³⁹¹⁸⁹⁶ is an apocalyptic number.

391896 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

391896 is an abundant number, since it is smaller than the sum of its proper divisors (669684).

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

391896 is a wasteful number, since it uses less digits than its factorization.

391896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5455 (or 5448 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 391896 is about 626.0159742371. The cubic root of 391896 is about 73.1796413866.

The spelling of 391896 in words is "three hundred ninety-one thousand, eight hundred ninety-six".