1379096640 has 84 divisors (see below), whose sum is σ = 4743527724. Its totient is φ = 367758336.

The previous prime is 1379096617. The next prime is 1379096647. The reversal of 1379096640 is 466909731.

It can be written as a sum of positive squares in 2 ways, for example, as 343286784 + 1035809856 = 18528^2 + 32184^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1379096647) 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, 236547 + ... + 242306.

Almost surely, 2^1379096640 is an apocalyptic number.

1379096640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1379096640 is an abundant number, since it is smaller than the sum of its proper divisors (3364431084).

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

1379096640 is a wasteful number, since it uses less digits than its factorization.

1379096640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478876 (or 478863 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 1379096640 is about 37136.1904346690. The cubic root of 1379096640 is about 1113.0932952892.

The spelling of 1379096640 in words is "one billion, three hundred seventy-nine million, ninety-six thousand, six hundred forty".