403975 has 24 divisors (see below), whose sum is σ = 593712. Its totient is φ = 268800.

The previous prime is 403969. The next prime is 403979. The reversal of 403975 is 579304.

It is not a de Polignac number, because 403975 - 2¹⁷ = 272903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3519 + ... + 3631.

It is an arithmetic number, because the mean of its divisors is an integer number (24738).

2⁴⁰³⁹⁷⁵ is an apocalyptic number.

403975 is a deficient number, since it is larger than the sum of its proper divisors (189737).

403975 is a wasteful number, since it uses less digits than its factorization.

403975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 403975 is about 635.5902768293. The cubic root of 403975 is about 73.9238930215.

It can be divided in two parts, 4039 and 75, that added together give a palindrome (4114).

The spelling of 403975 in words is "four hundred three thousand, nine hundred seventy-five".