397512827 has 8 divisors (see below), whose sum is σ = 401472000. Its totient is φ = 393572520.

The previous prime is 397512823. The next prime is 397512833. The reversal of 397512827 is 728215793.

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 397512827 - 2² = 397512823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397512821) 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, 39674 + ... + 48672.

It is an arithmetic number, because the mean of its divisors is an integer number (50184000).

Almost surely, 2^397512827 is an apocalyptic number.

397512827 is a deficient number, since it is larger than the sum of its proper divisors (3959173).

397512827 is a wasteful number, since it uses less digits than its factorization.

397512827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9433.

The product of its digits is 211680, while the sum is 44.

The square root of 397512827 is about 19937.7237166132. The cubic root of 397512827 is about 735.2759862573.

The spelling of 397512827 in words is "three hundred ninety-seven million, five hundred twelve thousand, eight hundred twenty-seven".