395305090 has 16 divisors (see below), whose sum is σ = 736085880. Its totient is φ = 152669440.

The previous prime is 395305073. The next prime is 395305091. The reversal of 395305090 is 90503593.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 179479609 + 215825481 = 13397^2 + 14691^2 .

It is a super-2 number, since 2×395305090² = 312532228359816200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (395305091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681271 + ... + 681850.

Almost surely, 2^395305090 is an apocalyptic number.

395305090 is a deficient number, since it is larger than the sum of its proper divisors (340780790).

395305090 is a wasteful number, since it uses less digits than its factorization.

395305090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363157.

The product of its (nonzero) digits is 18225, while the sum is 34.

The square root of 395305090 is about 19882.2808047769. The cubic root of 395305090 is about 733.9122478725.

The spelling of 395305090 in words is "three hundred ninety-five million, three hundred five thousand, ninety".