397277294405 has 8 divisors (see below), whose sum is σ = 477330917112. Its totient is φ = 317423059648.

The previous prime is 397277294357. The next prime is 397277294417. The reversal of 397277294405 is 504492772793.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 99250831681 + 298026462724 = 315041^2 + 545918^2 .

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 397277294405 - 2¹⁰ = 397277293381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49842602 + ... + 49850571.

It is an arithmetic number, because the mean of its divisors is an integer number (59666364639).

Almost surely, 2^397277294405 is an apocalyptic number.

It is an amenable number.

397277294405 is a deficient number, since it is larger than the sum of its proper divisors (80053622707).

397277294405 is an equidigital number, since it uses as much as digits as its factorization.

397277294405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99693975.

The product of its (nonzero) digits is 26671680, while the sum is 59.

The spelling of 397277294405 in words is "three hundred ninety-seven billion, two hundred seventy-seven million, two hundred ninety-four thousand, four hundred five".