397716216090 has 32 divisors (see below), whose sum is σ = 954535570560. Its totient is φ = 106055807424.

The previous prime is 397716216071. The next prime is 397716216179. The reversal of 397716216090 is 90612617793.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3084331 + ... + 3210689.

It is an arithmetic number, because the mean of its divisors is an integer number (29829236580).

Almost surely, 2^397716216090 is an apocalyptic number.

397716216090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

397716216090 is an abundant number, since it is smaller than the sum of its proper divisors (556819354470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397716216090 is a wasteful number, since it uses less digits than its factorization.

397716216090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231286.

The product of its (nonzero) digits is 857304, while the sum is 51.

The spelling of 397716216090 in words is "three hundred ninety-seven billion, seven hundred sixteen million, two hundred sixteen thousand, ninety".