1399608 has 48 divisors (see below), whose sum is σ = 4333680. Its totient is φ = 399744.

The previous prime is 1399603. The next prime is 1399609. The reversal of 1399608 is 8069931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399603) 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, 885 + ... + 1892.

It is an arithmetic number, because the mean of its divisors is an integer number (90285).

2^1399608 is an apocalyptic number.

1399608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1399608 is an abundant number, since it is smaller than the sum of its proper divisors (2934072).

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

1399608 is a wasteful number, since it uses less digits than its factorization.

1399608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796 (or 2789 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1399608 is about 1183.0502947889. The cubic root of 1399608 is about 111.8584521367.

The spelling of 1399608 in words is "one million, three hundred ninety-nine thousand, six hundred eight".