398088803540 has 12 divisors (see below), whose sum is σ = 835986487476. Its totient is φ = 159235521408.

The previous prime is 398088803537. The next prime is 398088803543. The reversal of 398088803540 is 45308880893.

It is an interprime number because it is at equal distance from previous prime (398088803537) and next prime (398088803543).

It can be written as a sum of positive squares in 2 ways, for example, as 299370933904 + 98717869636 = 547148^2 + 314194^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398088803543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9952220069 + ... + 9952220108.

It is an arithmetic number, because the mean of its divisors is an integer number (69665540623).

Almost surely, 2^398088803540 is an apocalyptic number.

It is an amenable number.

398088803540 is an abundant number, since it is smaller than the sum of its proper divisors (437897683936).

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

398088803540 is a wasteful number, since it uses less digits than its factorization.

398088803540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19904440186 (or 19904440184 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 398088803540 in words is "three hundred ninety-eight billion, eighty-eight million, eight hundred three thousand, five hundred forty".