320400417 has 8 divisors (see below), whose sum is σ = 427576320. Its totient is φ = 213412400.

The previous prime is 320400413. The next prime is 320400433. The reversal of 320400417 is 714004023.

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 320400417 - 2² = 320400413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320400393 and 320400402.

It is not an unprimeable number, because it can be changed into a prime (320400413) 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, 42942 + ... + 49847.

It is an arithmetic number, because the mean of its divisors is an integer number (53447040).

Almost surely, 2^320400417 is an apocalyptic number.

It is an amenable number.

320400417 is a deficient number, since it is larger than the sum of its proper divisors (107175903).

320400417 is a wasteful number, since it uses less digits than its factorization.

320400417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93943.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 320400417 is about 17899.7323164342. The cubic root of 320400417 is about 684.2755528567.

The spelling of 320400417 in words is "three hundred twenty million, four hundred thousand, four hundred seventeen".