395143040 has 32 divisors (see below), whose sum is σ = 944640360. Its totient is φ = 158056960.

The previous prime is 395143031. The next prime is 395143051. The reversal of 395143040 is 40341593.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×395143040² = 312276044120883200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 395142994 and 395143012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308066 + ... + 309345.

Almost surely, 2^395143040 is an apocalyptic number.

It is an amenable number.

395143040 is an abundant number, since it is smaller than the sum of its proper divisors (549497320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

395143040 is an equidigital number, since it uses as much as digits as its factorization.

395143040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617430 (or 617418 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 395143040 is about 19878.2051503651. The cubic root of 395143040 is about 733.8119483504.

The spelling of 395143040 in words is "three hundred ninety-five million, one hundred forty-three thousand, forty".