395683740 has 144 divisors (see below), whose sum is σ = 1274757120. Its totient is φ = 99066240.

The previous prime is 395683733. The next prime is 395683751. The reversal of 395683740 is 47386593.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 433885 + ... + 434795.

It is an arithmetic number, because the mean of its divisors is an integer number (8852480).

Almost surely, 2^395683740 is an apocalyptic number.

395683740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395683740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637378560).

395683740 is an abundant number, since it is smaller than the sum of its proper divisors (879073380).

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

395683740 is a wasteful number, since it uses less digits than its factorization.

395683740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 395683740 is about 19891.8008234549. The cubic root of 395683740 is about 734.1465033861.

The spelling of 395683740 in words is "three hundred ninety-five million, six hundred eighty-three thousand, seven hundred forty".