8400353 has 4 divisors (see below), whose sum is σ = 9046548. Its totient is φ = 7754160.

The previous prime is 8400323. The next prime is 8400373. The reversal of 8400353 is 3530048.

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 1067089 + 7333264 = 1033^2 + 2708^2 .

It is a cyclic number.

It is not a de Polignac number, because 8400353 - 2⁸ = 8400097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8400323) 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, 323078 + ... + 323103.

It is an arithmetic number, because the mean of its divisors is an integer number (2261637).

Almost surely, 2^8400353 is an apocalyptic number.

It is an amenable number.

8400353 is a deficient number, since it is larger than the sum of its proper divisors (646195).

8400353 is a wasteful number, since it uses less digits than its factorization.

8400353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646194.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 8400353 is about 2898.3362468837. The cubic root of 8400353 is about 203.2821188462.

The spelling of 8400353 in words is "eight million, four hundred thousand, three hundred fifty-three".