390194448 has 120 divisors (see below), whose sum is σ = 1223725248. Its totient is φ = 106622208.

The previous prime is 390194447. The next prime is 390194477. The reversal of 390194448 is 844491093.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (390194443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50490 + ... + 57702.

Almost surely, 2^390194448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390194448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611862624).

390194448 is an abundant number, since it is smaller than the sum of its proper divisors (833530800).

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

390194448 is a wasteful number, since it uses less digits than its factorization.

390194448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7261 (or 7248 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 390194448 is about 19753.3401732467. The cubic root of 390194448 is about 730.7357615912.

The spelling of 390194448 in words is "three hundred ninety million, one hundred ninety-four thousand, four hundred forty-eight".