397400237 has 8 divisors (see below), whose sum is σ = 428555904. Its totient is φ = 366328368.

The previous prime is 397400231. The next prime is 397400243. The reversal of 397400237 is 732004793.

It is an interprime number because it is at equal distance from previous prime (397400231) and next prime (397400243).

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 397400237 - 2¹⁰ = 397399213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397400197 and 397400206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397400231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10913 + ... + 30230.

It is an arithmetic number, because the mean of its divisors is an integer number (53569488).

Almost surely, 2^397400237 is an apocalyptic number.

It is an amenable number.

397400237 is a deficient number, since it is larger than the sum of its proper divisors (31155667).

397400237 is a wasteful number, since it uses less digits than its factorization.

397400237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41899.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 397400237 is about 19934.8999746675. The cubic root of 397400237 is about 735.2065607908.

The spelling of 397400237 in words is "three hundred ninety-seven million, four hundred thousand, two hundred thirty-seven".