397850427 has 16 divisors (see below), whose sum is σ = 634747680. Its totient is φ = 244830816.

The previous prime is 397850419. The next prime is 397850471. The reversal of 397850427 is 724058793.

It is not a de Polignac number, because 397850427 - 2³ = 397850419 is a prime.

It is a super-3 number, since 3×397850427³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (397850407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566388 + ... + 567089.

It is an arithmetic number, because the mean of its divisors is an integer number (39671730).

Almost surely, 2^397850427 is an apocalyptic number.

397850427 is a deficient number, since it is larger than the sum of its proper divisors (236897253).

397850427 is a wasteful number, since it uses less digits than its factorization.

397850427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133499 (or 1133493 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 397850427 is about 19946.1882824764. The cubic root of 397850427 is about 735.4840792774.

The spelling of 397850427 in words is "three hundred ninety-seven million, eight hundred fifty thousand, four hundred twenty-seven".