390143504 has 10 divisors (see below), whose sum is σ = 755903070. Its totient is φ = 195071744.

The previous prime is 390143497. The next prime is 390143513. The reversal of 390143504 is 405341093.

It can be written as a sum of positive squares in only one way, i.e., 389983504 + 160000 = 19748^2 + 400^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12191969 + ... + 12192000.

It is an arithmetic number, because the mean of its divisors is an integer number (75590307).

Almost surely, 2^390143504 is an apocalyptic number.

It is an amenable number.

390143504 is a deficient number, since it is larger than the sum of its proper divisors (365759566).

390143504 is a wasteful number, since it uses less digits than its factorization.

390143504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24383977 (or 24383971 counting only the distinct ones).

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

The square root of 390143504 is about 19752.0506277196. The cubic root of 390143504 is about 730.7039584539.

Adding to 390143504 its reverse (405341093), we get a palindrome (795484597).

The spelling of 390143504 in words is "three hundred ninety million, one hundred forty-three thousand, five hundred four".