1399790448 has 180 divisors, whose sum is σ = 4579682328. Its totient is φ = 397958400.

The previous prime is 1399790423. The next prime is 1399790459. The reversal of 1399790448 is 8440979931.

It is a junction number, because it is equal to n+sod(n) for n = 1399790394 and 1399790403.

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 35 ways as a sum of consecutive naturals, for example, 1996498 + ... + 1997198.

Almost surely, 2^1399790448 is an apocalyptic number.

1399790448 is a gapful number since it is divisible by the number (18) 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 1399790448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2289841164).

1399790448 is an abundant number, since it is smaller than the sum of its proper divisors (3179891880).

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

1399790448 is a wasteful number, since it uses less digits than its factorization.

1399790448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 1399790448 is about 37413.7735065577. The cubic root of 1399790448 is about 1118.6331241761.

The spelling of 1399790448 in words is "one billion, three hundred ninety-nine million, seven hundred ninety thousand, four hundred forty-eight".