1390091248 has 90 divisors (see below), whose sum is σ = 3345390792. Its totient is φ = 547896960.

The previous prime is 1390091233. The next prime is 1390091293. The reversal of 1390091248 is 8421900931.

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 17 ways as a sum of consecutive naturals, for example, 5129353 + ... + 5129623.

Almost surely, 2^1390091248 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 1390091248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672695396).

1390091248 is an abundant number, since it is smaller than the sum of its proper divisors (1955299544).

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

1390091248 is an equidigital number, since it uses as much as digits as its factorization.

1390091248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1390091248 is about 37283.9274755222. The cubic root of 1390091248 is about 1116.0434501310.

The spelling of 1390091248 in words is "one billion, three hundred ninety million, ninety-one thousand, two hundred forty-eight".