397351147 has 4 divisors (see below), whose sum is σ = 397612216. Its totient is φ = 397090080.

The previous prime is 397351109. The next prime is 397351159. The reversal of 397351147 is 741153793.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 397351147 - 2²⁷ = 263133419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397351247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128238 + ... + 131299.

It is an arithmetic number, because the mean of its divisors is an integer number (99403054).

Almost surely, 2^397351147 is an apocalyptic number.

397351147 is a deficient number, since it is larger than the sum of its proper divisors (261069).

397351147 is a wasteful number, since it uses less digits than its factorization.

397351147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261068.

The product of its digits is 79380, while the sum is 40.

The square root of 397351147 is about 19933.6686788960. The cubic root of 397351147 is about 735.1762867137.

The spelling of 397351147 in words is "three hundred ninety-seven million, three hundred fifty-one thousand, one hundred forty-seven".