1391608 has 16 divisors (see below), whose sum is σ = 2625480. Its totient is φ = 691488.

The previous prime is 1391597. The next prime is 1391627. The reversal of 1391608 is 8061931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135 + ... + 2017.

2^1391608 is an apocalyptic number.

It is an amenable number.

1391608 is a deficient number, since it is larger than the sum of its proper divisors (1233872).

1391608 is a wasteful number, since it uses less digits than its factorization.

1391608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1391608 is about 1179.6643590446. The cubic root of 1391608 is about 111.6449213864.

The spelling of 1391608 in words is "one million, three hundred ninety-one thousand, six hundred eight".