395421489 has 6 divisors (see below), whose sum is σ = 571164386. Its totient is φ = 263614320.

The previous prime is 395421487. The next prime is 395421491. The reversal of 395421489 is 984124593.

It is an interprime number because it is at equal distance from previous prime (395421487) and next prime (395421491).

It can be written as a sum of positive squares in only one way, i.e., 393347889 + 2073600 = 19833^2 + 1440^2 .

It is not a de Polignac number, because 395421489 - 2¹ = 395421487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395421487) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21967852 + ... + 21967869.

Almost surely, 2^395421489 is an apocalyptic number.

It is an amenable number.

395421489 is a deficient number, since it is larger than the sum of its proper divisors (175742897).

395421489 is a wasteful number, since it uses less digits than its factorization.

395421489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43935727 (or 43935724 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 395421489 is about 19885.2077937345. The cubic root of 395421489 is about 733.9842751669.

The spelling of 395421489 in words is "three hundred ninety-five million, four hundred twenty-one thousand, four hundred eighty-nine".