397683451 has 8 divisors (see below), whose sum is σ = 434521008. Its totient is φ = 360960000.

The previous prime is 397683439. The next prime is 397683457. The reversal of 397683451 is 154386793.

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

It is a 12-Lehmer number, since φ(397683451) divides (397683451-1)¹².

It is a cyclic number.

It is not a de Polignac number, because 397683451 - 2⁷ = 397683323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397683457) 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, 21150 + ... + 35251.

It is an arithmetic number, because the mean of its divisors is an integer number (54315126).

Almost surely, 2^397683451 is an apocalyptic number.

397683451 is a deficient number, since it is larger than the sum of its proper divisors (36837557).

397683451 is a wasteful number, since it uses less digits than its factorization.

397683451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57053.

The product of its digits is 544320, while the sum is 46.

The square root of 397683451 is about 19942.0021813257. The cubic root of 397683451 is about 735.3811717808.

The spelling of 397683451 in words is "three hundred ninety-seven million, six hundred eighty-three thousand, four hundred fifty-one".