395422757 has 4 divisors (see below), whose sum is σ = 395479020. Its totient is φ = 395366496.

The previous prime is 395422747. The next prime is 395422787. The reversal of 395422757 is 757224593.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 757224593 = 167 ⋅4534279.

It can be written as a sum of positive squares in 2 ways, for example, as 131652676 + 263770081 = 11474^2 + 16241^2 .

It is a cyclic number.

It is not a de Polignac number, because 395422757 - 2¹⁴ = 395406373 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 (395422717) 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, 15782 + ... + 32247.

It is an arithmetic number, because the mean of its divisors is an integer number (98869755).

Almost surely, 2^395422757 is an apocalyptic number.

It is an amenable number.

395422757 is a deficient number, since it is larger than the sum of its proper divisors (56263).

395422757 is an equidigital number, since it uses as much as digits as its factorization.

395422757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56262.

The product of its digits is 529200, while the sum is 44.

The square root of 395422757 is about 19885.2396767049. The cubic root of 395422757 is about 733.9850597231.

The spelling of 395422757 in words is "three hundred ninety-five million, four hundred twenty-two thousand, seven hundred fifty-seven".