397001222 has 8 divisors (see below), whose sum is σ = 596447472. Its totient is φ = 198185400.

The previous prime is 397001177. The next prime is 397001233. The reversal of 397001222 is 222100793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 397001191 and 397001200.

It is a congruent number.

It is an unprimeable number.

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, 156029 + ... + 158552.

It is an arithmetic number, because the mean of its divisors is an integer number (74555934).

Almost surely, 2^397001222 is an apocalyptic number.

397001222 is a deficient number, since it is larger than the sum of its proper divisors (199446250).

397001222 is a wasteful number, since it uses less digits than its factorization.

397001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315214.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 397001222 is about 19924.8895103586. The cubic root of 397001222 is about 734.9604137441.

The spelling of 397001222 in words is "three hundred ninety-seven million, one thousand, two hundred twenty-two".