397616377 has 8 divisors (see below), whose sum is σ = 401688576. Its totient is φ = 393554112.

The previous prime is 397616339. The next prime is 397616389. The reversal of 397616377 is 773616793.

It is a happy number.

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 397616377 - 2¹⁵ = 397583609 is a prime.

It is a super-2 number, since 2×397616377² = 316197566517212258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397616377.

It is not an unprimeable number, because it can be changed into a prime (397611377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98248 + ... + 102214.

It is an arithmetic number, because the mean of its divisors is an integer number (50211072).

Almost surely, 2^397616377 is an apocalyptic number.

It is an amenable number.

397616377 is a deficient number, since it is larger than the sum of its proper divisors (4072199).

397616377 is a wasteful number, since it uses less digits than its factorization.

397616377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4967.

The product of its digits is 1000188, while the sum is 49.

The square root of 397616377 is about 19940.3203835846. The cubic root of 397616377 is about 735.3398258897.

The spelling of 397616377 in words is "three hundred ninety-seven million, six hundred sixteen thousand, three hundred seventy-seven".