397134737 has 8 divisors (see below), whose sum is σ = 403852032. Its totient is φ = 390448800.

The previous prime is 397134719. The next prime is 397134757. The reversal of 397134737 is 737431793.

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 397134737 - 2¹⁰ = 397133713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397134757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18437 + ... + 33677.

It is an arithmetic number, because the mean of its divisors is an integer number (50481504).

Almost surely, 2^397134737 is an apocalyptic number.

It is an amenable number.

397134737 is a deficient number, since it is larger than the sum of its proper divisors (6717295).

397134737 is a wasteful number, since it uses less digits than its factorization.

397134737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15679.

The product of its digits is 333396, while the sum is 44.

The square root of 397134737 is about 19928.2396864349. The cubic root of 397134737 is about 735.0427957249.

The spelling of 397134737 in words is "three hundred ninety-seven million, one hundred thirty-four thousand, seven hundred thirty-seven".