397342743 has 16 divisors (see below), whose sum is σ = 606351360. Its totient is φ = 226724256.

The previous prime is 397342727. The next prime is 397342769. The reversal of 397342743 is 347243793.

It is not a de Polignac number, because 397342743 - 2⁴ = 397342727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397342695 and 397342704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397342783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1546 + ... + 28232.

It is an arithmetic number, because the mean of its divisors is an integer number (37896960).

Almost surely, 2^397342743 is an apocalyptic number.

397342743 is a deficient number, since it is larger than the sum of its proper divisors (209008617).

397342743 is a wasteful number, since it uses less digits than its factorization.

397342743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27406.

The product of its digits is 381024, while the sum is 42.

The square root of 397342743 is about 19933.4578786522. The cubic root of 397342743 is about 735.1711036700.

The spelling of 397342743 in words is "three hundred ninety-seven million, three hundred forty-two thousand, seven hundred forty-three".