398703 has 8 divisors (see below), whose sum is σ = 534528. Its totient is φ = 264344.

The previous prime is 398693. The next prime is 398711. The reversal of 398703 is 307893.

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

It is a cyclic number.

It is not a de Polignac number, because 398703 - 2¹⁸ = 136559 is a prime.

It is an Ulam number.

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 398703.

It is not an unprimeable number, because it can be changed into a prime (398303) 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 7 ways as a sum of consecutive naturals, for example, 850 + ... + 1232.

It is an arithmetic number, because the mean of its divisors is an integer number (66816).

2³⁹⁸⁷⁰³ is an apocalyptic number.

398703 is a deficient number, since it is larger than the sum of its proper divisors (135825).

398703 is a wasteful number, since it uses less digits than its factorization.

398703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 398703 is about 631.4293309627. The cubic root of 398703 is about 73.6009072628.

The spelling of 398703 in words is "three hundred ninety-eight thousand, seven hundred three".