398933139503 has 8 divisors (see below), whose sum is σ = 401180010480. Its totient is φ = 396686471040.

The previous prime is 398933139469. The next prime is 398933139509. The reversal of 398933139503 is 305931339893.

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 398933139503 - 2¹⁰ = 398933138479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398933139509) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5782673 + ... + 5851253.

It is an arithmetic number, because the mean of its divisors is an integer number (50147501310).

Almost surely, 2^398933139503 is an apocalyptic number.

398933139503 is a deficient number, since it is larger than the sum of its proper divisors (2246870977).

398933139503 is a wasteful number, since it uses less digits than its factorization.

398933139503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101257.

The product of its (nonzero) digits is 7085880, while the sum is 56.

The spelling of 398933139503 in words is "three hundred ninety-eight billion, nine hundred thirty-three million, one hundred thirty-nine thousand, five hundred three".