403408081 has 4 divisors (see below), whose sum is σ = 406487664. Its totient is φ = 400328500.

The previous prime is 403408051. The next prime is 403408087. The reversal of 403408081 is 180804304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 403408081 - 2²⁷ = 269190353 is a prime.

It is a super-2 number, since 2×403408081² = 325476159632205122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403408087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539595 + ... + 1539856.

It is an arithmetic number, because the mean of its divisors is an integer number (101621916).

Almost surely, 2^403408081 is an apocalyptic number.

It is an amenable number.

403408081 is a deficient number, since it is larger than the sum of its proper divisors (3079583).

403408081 is a wasteful number, since it uses less digits than its factorization.

403408081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079582.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 403408081 is about 20085.0213094236. The cubic root of 403408081 is about 738.8929642587.

The spelling of 403408081 in words is "four hundred three million, four hundred eight thousand, eighty-one".