395147724 has 12 divisors (see below), whose sum is σ = 922011384. Its totient is φ = 131715904.

The previous prime is 395147723. The next prime is 395147737. The reversal of 395147724 is 427741593.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×395147724² = 312283447564760352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (395147723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16464477 + ... + 16464500.

It is an arithmetic number, because the mean of its divisors is an integer number (76834282).

Almost surely, 2^395147724 is an apocalyptic number.

It is an amenable number.

395147724 is an abundant number, since it is smaller than the sum of its proper divisors (526863660).

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

395147724 is a wasteful number, since it uses less digits than its factorization.

395147724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32928984 (or 32928982 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 395147724 is about 19878.3229674940. The cubic root of 395147724 is about 733.8148478587.

The spelling of 395147724 in words is "three hundred ninety-five million, one hundred forty-seven thousand, seven hundred twenty-four".