398067388 has 6 divisors (see below), whose sum is σ = 696617936. Its totient is φ = 199033692.

The previous prime is 398067367. The next prime is 398067389. The reversal of 398067388 is 883760893.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398067389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49758420 + ... + 49758427.

Almost surely, 2^398067388 is an apocalyptic number.

It is an amenable number.

398067388 is a deficient number, since it is larger than the sum of its proper divisors (298550548).

398067388 is a wasteful number, since it uses less digits than its factorization.

398067388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99516851 (or 99516849 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 398067388 is about 19951.6261993854. The cubic root of 398067388 is about 735.6177495822.

The spelling of 398067388 in words is "three hundred ninety-eight million, sixty-seven thousand, three hundred eighty-eight".