397741 has 8 divisors (see below), whose sum is σ = 415800. Its totient is φ = 380160.

The previous prime is 397729. The next prime is 397751. The reversal of 397741 is 147793.

397741 = 25² + 26² + ... + 106².

It can be written as a sum of positive squares in 4 ways, for example, as 841 + 396900 = 29^2 + 630^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397741 is a prime.

It is a Duffinian number.

397741 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397721) 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, 3595 + ... + 3703.

It is an arithmetic number, because the mean of its divisors is an integer number (51975).

2³⁹⁷⁷⁴¹ is an apocalyptic number.

It is an amenable number.

397741 is a deficient number, since it is larger than the sum of its proper divisors (18059).

397741 is a wasteful number, since it uses less digits than its factorization.

397741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239.

The product of its digits is 5292, while the sum is 31.

The square root of 397741 is about 630.6671071175. The cubic root of 397741 is about 73.5416642547.

The spelling of 397741 in words is "three hundred ninety-seven thousand, seven hundred forty-one".