397672401 has 8 divisors (see below), whose sum is σ = 605977024. Its totient is φ = 227241360.

The previous prime is 397672399. The next prime is 397672417. The reversal of 397672401 is 104276793.

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

It is not a de Polignac number, because 397672401 - 2¹ = 397672399 is a prime.

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 397672401.

It is not an unprimeable number, because it can be changed into a prime (397672421) 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, 9468370 + ... + 9468411.

It is an arithmetic number, because the mean of its divisors is an integer number (75747128).

Almost surely, 2^397672401 is an apocalyptic number.

It is an amenable number.

397672401 is a deficient number, since it is larger than the sum of its proper divisors (208304623).

397672401 is a wasteful number, since it uses less digits than its factorization.

397672401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18936791.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 397672401 is about 19941.7251259764. The cubic root of 397672401 is about 735.3743606373.

The spelling of 397672401 in words is "three hundred ninety-seven million, six hundred seventy-two thousand, four hundred one".