397304545 has 8 divisors (see below), whose sum is σ = 520107840. Its totient is φ = 288948720.

The previous prime is 397304543. The next prime is 397304561. The reversal of 397304545 is 545403793.

It is a happy number.

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

It is not a de Polignac number, because 397304545 - 2¹ = 397304543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397304498 and 397304507.

It is not an unprimeable number, because it can be changed into a prime (397304543) 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, 3611805 + ... + 3611914.

It is an arithmetic number, because the mean of its divisors is an integer number (65013480).

Almost surely, 2^397304545 is an apocalyptic number.

It is an amenable number.

397304545 is a deficient number, since it is larger than the sum of its proper divisors (122803295).

397304545 is a wasteful number, since it uses less digits than its factorization.

397304545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7223735.

The product of its (nonzero) digits is 226800, while the sum is 40.

The square root of 397304545 is about 19932.4997177976. The cubic root of 397304545 is about 735.1475446929.

The spelling of 397304545 in words is "three hundred ninety-seven million, three hundred four thousand, five hundred forty-five".