406553903 has 8 divisors (see below), whose sum is σ = 464796672. Its totient is φ = 348352056.

The previous prime is 406553899. The next prime is 406553941. The reversal of 406553903 is 309355604.

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 406553903 - 2² = 406553899 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 (406553603) 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, 15326 + ... + 32372.

It is an arithmetic number, because the mean of its divisors is an integer number (58099584).

Almost surely, 2^406553903 is an apocalyptic number.

406553903 is a deficient number, since it is larger than the sum of its proper divisors (58242769).

406553903 is a wasteful number, since it uses less digits than its factorization.

406553903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20461.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 406553903 is about 20163.1818669574. The cubic root of 406553903 is about 740.8086503403.

The spelling of 406553903 in words is "four hundred six million, five hundred fifty-three thousand, nine hundred three".