398956103 has 36 divisors (see below), whose sum is σ = 512607888. Its totient is φ = 304012800.

The previous prime is 398956097. The next prime is 398956109. The reversal of 398956103 is 301659893.

It is an interprime number because it is at equal distance from previous prime (398956097) and next prime (398956109).

It is not a de Polignac number, because 398956103 - 2⁶ = 398956039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398956109) 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 35 ways as a sum of consecutive naturals, for example, 994703 + ... + 995103.

It is an arithmetic number, because the mean of its divisors is an integer number (14239108).

Almost surely, 2^398956103 is an apocalyptic number.

398956103 is a deficient number, since it is larger than the sum of its proper divisors (113651785).

398956103 is a wasteful number, since it uses less digits than its factorization.

398956103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 398956103 is about 19973.8855258560. The cubic root of 398956103 is about 736.1647831014.

The spelling of 398956103 in words is "three hundred ninety-eight million, nine hundred fifty-six thousand, one hundred three".