403869 has 8 divisors (see below), whose sum is σ = 570240. Its totient is φ = 253376.

The previous prime is 403867. The next prime is 403877. The reversal of 403869 is 968304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 403869 - 2¹ = 403867 is a prime.

It is a super-2 number, since 2×403869² = 326220338322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3909 + ... + 4010.

It is an arithmetic number, because the mean of its divisors is an integer number (71280).

2⁴⁰³⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

403869 is a deficient number, since it is larger than the sum of its proper divisors (166371).

403869 is a wasteful number, since it uses less digits than its factorization.

403869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7939.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 403869 is about 635.5068843057. The cubic root of 403869 is about 73.9174267648.

The spelling of 403869 in words is "four hundred three thousand, eight hundred sixty-nine".