398445616 has 30 divisors (see below), whose sum is σ = 799553612. Its totient is φ = 192346560.

The previous prime is 398445601. The next prime is 398445659. The reversal of 398445616 is 616544893.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1350 + ... + 28261.

Almost surely, 2^398445616 is an apocalyptic number.

It is an amenable number.

398445616 is an abundant number, since it is smaller than the sum of its proper divisors (401107996).

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

398445616 is a wasteful number, since it uses less digits than its factorization.

398445616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29677 (or 29642 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 398445616 is about 19961.1025747577. The cubic root of 398445616 is about 735.8506608627.

The spelling of 398445616 in words is "three hundred ninety-eight million, four hundred forty-five thousand, six hundred sixteen".