1386604749 has 12 divisors (see below), whose sum is σ = 1932686336. Its totient is φ = 884210712.

The previous prime is 1386604741. The next prime is 1386604759. The reversal of 1386604749 is 9474066831.

It is not a de Polignac number, because 1386604749 - 2³ = 1386604741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1386604698 and 1386604707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386604741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 435277 + ... + 438450.

Almost surely, 2^1386604749 is an apocalyptic number.

It is an amenable number.

1386604749 is a deficient number, since it is larger than the sum of its proper divisors (546081587).

1386604749 is an equidigital number, since it uses as much as digits as its factorization.

1386604749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873776 (or 873753 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 1386604749 is about 37237.1420627309. The cubic root of 1386604749 is about 1115.1096164695.

The spelling of 1386604749 in words is "one billion, three hundred eighty-six million, six hundred four thousand, seven hundred forty-nine".