395489450 has 24 divisors (see below), whose sum is σ = 736797708. Its totient is φ = 157940480.

The previous prime is 395489431. The next prime is 395489453. The reversal of 395489450 is 54984593.

It can be written as a sum of positive squares in 6 ways, for example, as 60855601 + 334633849 = 7801^2 + 18293^2 .

It is a super-2 number, since 2×395489450² = 312823810122605000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 395489395 and 395489404.

It is not an unprimeable number, because it can be changed into a prime (395489453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26594 + ... + 38706.

Almost surely, 2^395489450 is an apocalyptic number.

395489450 is a deficient number, since it is larger than the sum of its proper divisors (341308258).

395489450 is a wasteful number, since it uses less digits than its factorization.

395489450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12778 (or 12773 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 395489450 is about 19886.9165533524. The cubic root of 395489450 is about 734.0263226608.

The spelling of 395489450 in words is "three hundred ninety-five million, four hundred eighty-nine thousand, four hundred fifty".