1390249344 has 96 divisors (see below), whose sum is σ = 4059218520. Its totient is φ = 421273600.

The previous prime is 1390249337. The next prime is 1390249363. The reversal of 1390249344 is 4439420931.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31504 + ... + 61424.

Almost surely, 2^1390249344 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 1390249344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2029609260).

1390249344 is an abundant number, since it is smaller than the sum of its proper divisors (2668969176).

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

1390249344 is a wasteful number, since it uses less digits than its factorization.

1390249344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29960 (or 29937 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 1390249344 is about 37286.0475781491. The cubic root of 1390249344 is about 1116.0857579812.

The spelling of 1390249344 in words is "one billion, three hundred ninety million, two hundred forty-nine thousand, three hundred forty-four".