1377979744 has 72 divisors (see below), whose sum is σ = 2910433680. Its totient is φ = 642041856.

The previous prime is 1377979741. The next prime is 1377979777. The reversal of 1377979744 is 4479797731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377979741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1007349 + ... + 1008715.

It is an arithmetic number, because the mean of its divisors is an integer number (40422690).

Almost surely, 2^1377979744 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 1377979744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1455216840).

1377979744 is an abundant number, since it is smaller than the sum of its proper divisors (1532453936).

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

1377979744 is a wasteful number, since it uses less digits than its factorization.

1377979744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520 (or 1495 counting only the distinct ones).

The product of its digits is 9335088, while the sum is 58.

The square root of 1377979744 is about 37121.1495511656. The cubic root of 1377979744 is about 1112.7927252932.

The spelling of 1377979744 in words is "one billion, three hundred seventy-seven million, nine hundred seventy-nine thousand, seven hundred forty-four".