1387343344 has 60 divisors (see below), whose sum is σ = 2871773784. Its totient is φ = 649126912.

The previous prime is 1387343329. The next prime is 1387343369. The reversal of 1387343344 is 4433437831.

It is a super-2 number, since 2×1387343344² = 3849443108282204672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1387343297 and 1387343306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 910167 + ... + 911689.

Almost surely, 2^1387343344 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 1387343344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1435886892).

1387343344 is an abundant number, since it is smaller than the sum of its proper divisors (1484430440).

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

1387343344 is a wasteful number, since it uses less digits than its factorization.

1387343344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762 (or 1739 counting only the distinct ones).

The product of its digits is 290304, while the sum is 40.

The square root of 1387343344 is about 37247.0581925607. The cubic root of 1387343344 is about 1115.3075743938.

The spelling of 1387343344 in words is "one billion, three hundred eighty-seven million, three hundred forty-three thousand, three hundred forty-four".