396890777849177 has 4 divisors (see below), whose sum is σ = 399184944195300. Its totient is φ = 394596611503056.

The previous prime is 396890777849147. The next prime is 396890777849197. The reversal of 396890777849177 is 771948777098693.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165493713598096 + 231397064251081 = 12864436^2 + 15211741^2 .

It is a cyclic number.

It is not a de Polignac number, because 396890777849177 - 2⁶ = 396890777849113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396890777849147) 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, 1147083172802 + ... + 1147083173147.

It is an arithmetic number, because the mean of its divisors is an integer number (99796236048825).

Almost surely, 2^{396890777849177} is an apocalyptic number.

It is an amenable number.

396890777849177 is a deficient number, since it is larger than the sum of its proper divisors (2294166346123).

396890777849177 is a wasteful number, since it uses less digits than its factorization.

396890777849177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294166346122.

The product of its (nonzero) digits is 56458612224, while the sum is 92.

The spelling of 396890777849177 in words is "three hundred ninety-six trillion, eight hundred ninety billion, seven hundred seventy-seven million, eight hundred forty-nine thousand, one hundred seventy-seven".