395540421 has 8 divisors (see below), whose sum is σ = 527612544. Its totient is φ = 263580960.

The previous prime is 395540419. The next prime is 395540441. The reversal of 395540421 is 124045593.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 395540421 - 2¹ = 395540419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395540441) 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, 19600 + ... + 34281.

It is an arithmetic number, because the mean of its divisors is an integer number (65951568).

Almost surely, 2^395540421 is an apocalyptic number.

It is an amenable number.

395540421 is a deficient number, since it is larger than the sum of its proper divisors (132072123).

395540421 is a wasteful number, since it uses less digits than its factorization.

395540421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56331.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 395540421 is about 19888.1980330044. The cubic root of 395540421 is about 734.0578552747.

The spelling of 395540421 in words is "three hundred ninety-five million, five hundred forty thousand, four hundred twenty-one".