1379609687 has 8 divisors (see below), whose sum is σ = 1461388032. Its totient is φ = 1297900800.

The previous prime is 1379609681. The next prime is 1379609701. The reversal of 1379609687 is 7869069731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1379609687 - 2²² = 1375415383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379609681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26762 + ... + 58952.

It is an arithmetic number, because the mean of its divisors is an integer number (182673504).

Almost surely, 2^1379609687 is an apocalyptic number.

1379609687 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1379609687 is a deficient number, since it is larger than the sum of its proper divisors (81778345).

1379609687 is a wasteful number, since it uses less digits than its factorization.

1379609687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34729.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 1379609687 is about 37143.0974341128. The cubic root of 1379609687 is about 1113.2313079463.

The spelling of 1379609687 in words is "one billion, three hundred seventy-nine million, six hundred nine thousand, six hundred eighty-seven".