397069215 has 16 divisors (see below), whose sum is σ = 650807136. Its totient is φ = 206604800.

The previous prime is 397069193. The next prime is 397069219. The reversal of 397069215 is 512960793.

It is not a de Polignac number, because 397069215 - 2¹⁶ = 397003679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397069219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322206 + ... + 323435.

It is an arithmetic number, because the mean of its divisors is an integer number (40675446).

Almost surely, 2^397069215 is an apocalyptic number.

397069215 is a deficient number, since it is larger than the sum of its proper divisors (253737921).

397069215 is a wasteful number, since it uses less digits than its factorization.

397069215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645690.

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 397069215 is about 19926.5956701088. The cubic root of 397069215 is about 735.0023693755.

The spelling of 397069215 in words is "three hundred ninety-seven million, sixty-nine thousand, two hundred fifteen".