398975684452 has 12 divisors (see below), whose sum is σ = 698221675116. Its totient is φ = 199483777280.

The previous prime is 398975684449. The next prime is 398975684473. The reversal of 398975684452 is 254486579893.

It can be written as a sum of positive squares in 2 ways, for example, as 92918890276 + 306056794176 = 304826^2 + 553224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789793 + ... + 1192360.

It is an arithmetic number, because the mean of its divisors is an integer number (58185139593).

Almost surely, 2^398975684452 is an apocalyptic number.

It is an amenable number.

398975684452 is a deficient number, since it is larger than the sum of its proper divisors (299245990664).

398975684452 is a wasteful number, since it uses less digits than its factorization.

398975684452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032478 (or 2032476 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 70.

The spelling of 398975684452 in words is "three hundred ninety-eight billion, nine hundred seventy-five million, six hundred eighty-four thousand, four hundred fifty-two".