397523146 has 8 divisors (see below), whose sum is σ = 598190724. Its totient is φ = 198126240.

The previous prime is 397523141. The next prime is 397523183. The reversal of 397523146 is 641325793.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 279257521 + 118265625 = 16711^2 + 10875^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 397523099 and 397523108.

It is not an unprimeable number, because it can be changed into a prime (397523141) 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, 316885 + ... + 318136.

Almost surely, 2^397523146 is an apocalyptic number.

397523146 is a deficient number, since it is larger than the sum of its proper divisors (200667578).

397523146 is a wasteful number, since it uses less digits than its factorization.

397523146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635336.

The product of its digits is 136080, while the sum is 40.

The square root of 397523146 is about 19937.9824957291. The cubic root of 397523146 is about 735.2823485235.

The spelling of 397523146 in words is "three hundred ninety-seven million, five hundred twenty-three thousand, one hundred forty-six".