1399820522 has 8 divisors (see below), whose sum is σ = 2129304672. Its totient is φ = 690052300.

The previous prime is 1399820501. The next prime is 1399820537. The reversal of 1399820522 is 2250289931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1399820522.

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 3 ways as a sum of consecutive naturals, for example, 4928804 + ... + 4929087.

It is an arithmetic number, because the mean of its divisors is an integer number (266163084).

Almost surely, 2^1399820522 is an apocalyptic number.

1399820522 is a deficient number, since it is larger than the sum of its proper divisors (729484150).

1399820522 is an equidigital number, since it uses as much as digits as its factorization.

1399820522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9857964.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1399820522 is about 37414.1754152086. The cubic root of 1399820522 is about 1118.6411352637.

The spelling of 1399820522 in words is "one billion, three hundred ninety-nine million, eight hundred twenty thousand, five hundred twenty-two".