390446828050 has 12 divisors (see below), whose sum is σ = 726231100266. Its totient is φ = 156178731200.

The previous prime is 390446828003. The next prime is 390446828059. The reversal of 390446828050 is 50828644093.

It can be written as a sum of positive squares in 3 ways, for example, as 357595628049 + 32851200001 = 597993^2 + 181249^2 .

It is a junction number, because it is equal to n+sod(n) for n = 390446827985 and 390446828003.

It is not an unprimeable number, because it can be changed into a prime (390446828059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3904468231 + ... + 3904468330.

Almost surely, 2^390446828050 is an apocalyptic number.

390446828050 is a deficient number, since it is larger than the sum of its proper divisors (335784272216).

390446828050 is a wasteful number, since it uses less digits than its factorization.

390446828050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7808936573 (or 7808936568 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 390446828050 in words is "three hundred ninety billion, four hundred forty-six million, eight hundred twenty-eight thousand, fifty".