1599 has 8 divisors (see below), whose sum is σ = 2352. Its totient is φ = 960.

The previous prime is 1597. The next prime is 1601. The reversal of 1599 is 9951.

It can be divided in two parts, 159 and 9, that multiplied together give a triangular number (1431 = T_{53}).

It is a happy number.

It is a Cunningham number, because it is equal to 40^{2}-1.

It is an interprime number because it is at equal distance from previous prime (1597) and next prime (1601).

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

It is not a de Polignac number, because 1599 - 2^{1} = 1597 is a prime.

1599 is a modest number, since divided by 99 gives 15 as remainder.

1599 is a lucky number.

It is a plaindrome in base 5, base 6, base 10 and base 11.

It is a nialpdrome in base 7 and base 13.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number *n* which divided by its sum of digits gives 1599.

It is not an unprimeable number, because it can be changed into a prime (1597) 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, 19 + ... + 59.

It is an arithmetic number, because the mean of its divisors is an integer number (294).

1599 is a deficient number, since it is larger than the sum of its proper divisors (753).

1599 is a wasteful number, since it uses less digits than its factorization.

1599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57.

The product of its digits is 405, while the sum is 24.

The square root of 1599 is about 39.9874980463. The cubic root of 1599 is about 11.6936337636.

The spelling of 1599 in words is "one thousand, five hundred ninety-nine".

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