403969481 has 8 divisors (see below), whose sum is σ = 410012928. Its totient is φ = 397936000.

The previous prime is 403969471. The next prime is 403969483. The reversal of 403969481 is 184969304.

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 403969481 - 2²² = 399775177 is a prime.

It is a super-2 number, since 2×403969481² = 326382683158818722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403969483) 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 7 ways as a sum of consecutive naturals, for example, 131321 + ... + 134361.

It is an arithmetic number, because the mean of its divisors is an integer number (51251616).

Almost surely, 2^403969481 is an apocalyptic number.

It is an amenable number.

403969481 is a deficient number, since it is larger than the sum of its proper divisors (6043447).

403969481 is a wasteful number, since it uses less digits than its factorization.

403969481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4983.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 403969481 is about 20098.9920394034. The cubic root of 403969481 is about 739.2355637700.

The spelling of 403969481 in words is "four hundred three million, nine hundred sixty-nine thousand, four hundred eighty-one".