1399191488 has 28 divisors (see below), whose sum is σ = 2785487952. Its totient is φ = 697336320.

The previous prime is 1399191439. The next prime is 1399191523. The reversal of 1399191488 is 8841919931.

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 3 ways as a sum of consecutive naturals, for example, 15245 + ... + 55052.

Almost surely, 2^1399191488 is an apocalyptic number.

It is an amenable number.

1399191488 is a deficient number, since it is larger than the sum of its proper divisors (1386296464).

1399191488 is an equidigital number, since it uses as much as digits as its factorization.

1399191488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70620 (or 70610 counting only the distinct ones).

The product of its digits is 559872, while the sum is 53.

The square root of 1399191488 is about 37405.7681113488. The cubic root of 1399191488 is about 1118.4735497948.

The spelling of 1399191488 in words is "one billion, three hundred ninety-nine million, one hundred ninety-one thousand, four hundred eighty-eight".