406303397 has 4 divisors (see below), whose sum is σ = 406463520. Its totient is φ = 406143276.

The previous prime is 406303361. The next prime is 406303483. The reversal of 406303397 is 793303604.

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 406303397 - 2¹⁰ = 406302373 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 (406303307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76193 + ... + 81350.

It is an arithmetic number, because the mean of its divisors is an integer number (101615880).

Almost surely, 2^406303397 is an apocalyptic number.

It is an amenable number.

406303397 is a deficient number, since it is larger than the sum of its proper divisors (160123).

406303397 is a wasteful number, since it uses less digits than its factorization.

406303397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160122.

The product of its (nonzero) digits is 40824, while the sum is 35.

The square root of 406303397 is about 20156.9689437673. The cubic root of 406303397 is about 740.6564645834.

The spelling of 406303397 in words is "four hundred six million, three hundred three thousand, three hundred ninety-seven".