397250281 has 8 divisors (see below), whose sum is σ = 399320064. Its totient is φ = 395186640.

The previous prime is 397250267. The next prime is 397250291. The reversal of 397250281 is 182052793.

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 397250281 - 2⁷ = 397250153 is a prime.

It is a super-2 number, since 2×397250281² = 315615571509157922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397250281.

It is not an unprimeable number, because it can be changed into a prime (397250261) 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, 177751 + ... + 179971.

It is an arithmetic number, because the mean of its divisors is an integer number (49915008).

Almost surely, 2^397250281 is an apocalyptic number.

It is an amenable number.

397250281 is a deficient number, since it is larger than the sum of its proper divisors (2069783).

397250281 is a wasteful number, since it uses less digits than its factorization.

397250281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 397250281 is about 19931.1384772672. The cubic root of 397250281 is about 735.1140742623.

The spelling of 397250281 in words is "three hundred ninety-seven million, two hundred fifty thousand, two hundred eighty-one".