397600306877 has 4 divisors (see below), whose sum is σ = 400502499036. Its totient is φ = 394698114720.

The previous prime is 397600306823. The next prime is 397600306897. The reversal of 397600306877 is 778603006793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 778603006793 = 131 ⋅5943534403.

It can be written as a sum of positive squares in 2 ways, for example, as 189143228836 + 208457078041 = 434906^2 + 456571^2 .

It is a cyclic number.

It is not a de Polignac number, because 397600306877 - 2²⁴ = 397583529661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397600306897) 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, 1451095874 + ... + 1451096147.

It is an arithmetic number, because the mean of its divisors is an integer number (100125624759).

Almost surely, 2^397600306877 is an apocalyptic number.

It is an amenable number.

397600306877 is a deficient number, since it is larger than the sum of its proper divisors (2902192159).

397600306877 is a wasteful number, since it uses less digits than its factorization.

397600306877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902192158.

The product of its (nonzero) digits is 8001504, while the sum is 56.

The spelling of 397600306877 in words is "three hundred ninety-seven billion, six hundred million, three hundred six thousand, eight hundred seventy-seven".