403347397 has 4 divisors (see below), whose sum is σ = 414248716. Its totient is φ = 392446080.

The previous prime is 403347391. The next prime is 403347401. The reversal of 403347397 is 793743304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 222875041 + 180472356 = 14929^2 + 13434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-403347397 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 (403347391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5450604 + ... + 5450677.

It is an arithmetic number, because the mean of its divisors is an integer number (103562179).

Almost surely, 2^403347397 is an apocalyptic number.

It is an amenable number.

403347397 is a deficient number, since it is larger than the sum of its proper divisors (10901319).

403347397 is a wasteful number, since it uses less digits than its factorization.

403347397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10901318.

The product of its (nonzero) digits is 190512, while the sum is 40.

The square root of 403347397 is about 20083.5105745983. The cubic root of 403347397 is about 738.8559122583.

The spelling of 403347397 in words is "four hundred three million, three hundred forty-seven thousand, three hundred ninety-seven".