395754921 has 6 divisors (see below), whose sum is σ = 571646010. Its totient is φ = 263836608.

The previous prime is 395754913. The next prime is 395754937. The reversal of 395754921 is 129457593.

It is a happy number.

395754921 is a `hidden beast` number, since 3 + 95 + 75 + 492 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 328334400 + 67420521 = 18120^2 + 8211^2 .

It is not a de Polignac number, because 395754921 - 2³ = 395754913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (395754941) 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, 21986376 + ... + 21986393.

It is an arithmetic number, because the mean of its divisors is an integer number (95274335).

Almost surely, 2^395754921 is an apocalyptic number.

It is an amenable number.

395754921 is a deficient number, since it is larger than the sum of its proper divisors (175891089).

395754921 is a wasteful number, since it uses less digits than its factorization.

395754921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43972775 (or 43972772 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 395754921 is about 19893.5899475183. The cubic root of 395754921 is about 734.1905235160.

The spelling of 395754921 in words is "three hundred ninety-five million, seven hundred fifty-four thousand, nine hundred twenty-one".