398503662 has 8 divisors (see below), whose sum is σ = 797007336. Its totient is φ = 132834552.

The previous prime is 398503657. The next prime is 398503691. The reversal of 398503662 is 266305893.

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

398503662 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33208633 + ... + 33208644.

It is an arithmetic number, because the mean of its divisors is an integer number (99625917).

Almost surely, 2^398503662 is an apocalyptic number.

398503662 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

398503662 is a wasteful number, since it uses less digits than its factorization.

398503662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66417282.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 398503662 is about 19962.5564996070. The cubic root of 398503662 is about 735.8863923083.

The spelling of 398503662 in words is "three hundred ninety-eight million, five hundred three thousand, six hundred sixty-two".