397432147 has 8 divisors (see below), whose sum is σ = 465286752. Its totient is φ = 332347200.

The previous prime is 397432129. The next prime is 397432159. The reversal of 397432147 is 741234793.

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 397432147 - 2¹⁹ = 396907859 is a prime.

It is a super-2 number, since 2×397432147² = 315904622938059218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397432127) 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, 692104 + ... + 692677.

It is an arithmetic number, because the mean of its divisors is an integer number (58160844).

Almost surely, 2^397432147 is an apocalyptic number.

397432147 is a deficient number, since it is larger than the sum of its proper divisors (67854605).

397432147 is a wasteful number, since it uses less digits than its factorization.

397432147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384829.

The product of its digits is 127008, while the sum is 40.

The square root of 397432147 is about 19935.7003137587. The cubic root of 397432147 is about 735.2262385290.

The spelling of 397432147 in words is "three hundred ninety-seven million, four hundred thirty-two thousand, one hundred forty-seven".