395278461 has 20 divisors (see below), whose sum is σ = 591013852. Its totient is φ = 263279808.

The previous prime is 395278409. The next prime is 395278469. The reversal of 395278461 is 164872593.

It can be written as a sum of positive squares in 2 ways, for example, as 180069561 + 215208900 = 13419^2 + 14670^2 .

It is not a de Polignac number, because 395278461 - 2⁶ = 395278397 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 (395278469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 165105 + ... + 167481.

Almost surely, 2^395278461 is an apocalyptic number.

It is an amenable number.

395278461 is a deficient number, since it is larger than the sum of its proper divisors (195735391).

395278461 is a wasteful number, since it uses less digits than its factorization.

395278461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442 (or 4433 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 395278461 is about 19881.6111268680. The cubic root of 395278461 is about 733.8957679530.

The spelling of 395278461 in words is "three hundred ninety-five million, two hundred seventy-eight thousand, four hundred sixty-one".