397914481 has 8 divisors (see below), whose sum is σ = 424915200. Its totient is φ = 371799120.

The previous prime is 397914479. The next prime is 397914487. The reversal of 397914481 is 184419793.

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

It is not a de Polignac number, because 397914481 - 2¹ = 397914479 is a prime.

It is a super-2 number, since 2×397914481² = 316671868378998722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397914487) 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, 220411 + ... + 222208.

It is an arithmetic number, because the mean of its divisors is an integer number (53114400).

Almost surely, 2^397914481 is an apocalyptic number.

397914481 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

397914481 is a deficient number, since it is larger than the sum of its proper divisors (27000719).

397914481 is a wasteful number, since it uses less digits than its factorization.

397914481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442679.

The product of its digits is 217728, while the sum is 46.

The square root of 397914481 is about 19947.7938880469. The cubic root of 397914481 is about 735.5235481883.

The spelling of 397914481 in words is "three hundred ninety-seven million, nine hundred fourteen thousand, four hundred eighty-one".