397916071 has 8 divisors (see below), whose sum is σ = 456802304. Its totient is φ = 339540120.

The previous prime is 397916039. The next prime is 397916083. The reversal of 397916071 is 170619793.

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

It is a cyclic number.

It is not a de Polignac number, because 397916071 - 2⁵ = 397916039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397916371) 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, 125895 + ... + 129016.

It is an arithmetic number, because the mean of its divisors is an integer number (57100288).

Almost surely, 2^397916071 is an apocalyptic number.

397916071 is a deficient number, since it is larger than the sum of its proper divisors (58886233).

397916071 is a wasteful number, since it uses less digits than its factorization.

397916071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255141.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 397916071 is about 19947.8337420383. The cubic root of 397916071 is about 735.5245278635.

The spelling of 397916071 in words is "three hundred ninety-seven million, nine hundred sixteen thousand, seventy-one".