352688399 has 16 divisors (see below), whose sum is σ = 409685760. Its totient is φ = 297380160.

The previous prime is 352688389. The next prime is 352688407. The reversal of 352688399 is 993886253.

It is a Cunningham number, because it is equal to 18780²-1.

It is not a de Polignac number, because 352688399 - 2²⁴ = 335911183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 352688399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352688309) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 130112 + ... + 132794.

It is an arithmetic number, because the mean of its divisors is an integer number (25605360).

Almost surely, 2^352688399 is an apocalyptic number.

352688399 is a deficient number, since it is larger than the sum of its proper divisors (56997361).

352688399 is a wasteful number, since it uses less digits than its factorization.

352688399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990.

The product of its digits is 2799360, while the sum is 53.

The square root of 352688399 is about 18779.9999733759. Note that the first 4 decimals coincide. The cubic root of 352688399 is about 706.5296492044.

The spelling of 352688399 in words is "three hundred fifty-two million, six hundred eighty-eight thousand, three hundred ninety-nine".