397058847778 has 4 divisors (see below), whose sum is σ = 595588271670. Its totient is φ = 198529423888.

The previous prime is 397058847763. The next prime is 397058847791. The reversal of 397058847778 is 877748850793.

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

It can be written as a sum of positive squares in only one way, i.e., 385036383169 + 12022464609 = 620513^2 + 109647^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 397058847778.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 99264711943 + ... + 99264711946.

Almost surely, 2^397058847778 is an apocalyptic number.

397058847778 is a deficient number, since it is larger than the sum of its proper divisors (198529423892).

397058847778 is a wasteful number, since it uses less digits than its factorization.

397058847778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198529423891.

The product of its (nonzero) digits is 663828480, while the sum is 73.

The spelling of 397058847778 in words is "three hundred ninety-seven billion, fifty-eight million, eight hundred forty-seven thousand, seven hundred seventy-eight".