390141644 has 6 divisors (see below), whose sum is σ = 682747884. Its totient is φ = 195070820.

The previous prime is 390141643. The next prime is 390141659. The reversal of 390141644 is 446141093.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 390141644.

It is not an unprimeable number, because it can be changed into a prime (390141643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48767702 + ... + 48767709.

It is an arithmetic number, because the mean of its divisors is an integer number (113791314).

Almost surely, 2^390141644 is an apocalyptic number.

It is an amenable number.

390141644 is a deficient number, since it is larger than the sum of its proper divisors (292606240).

390141644 is a wasteful number, since it uses less digits than its factorization.

390141644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97535415 (or 97535413 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 390141644 is about 19752.0035439446. The cubic root of 390141644 is about 730.7027972474.

The spelling of 390141644 in words is "three hundred ninety million, one hundred forty-one thousand, six hundred forty-four".