398029422 has 16 divisors (see below), whose sum is σ = 909781632. Its totient is φ = 113722680.

The previous prime is 398029409. The next prime is 398029427. The reversal of 398029422 is 224920893.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398029427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4738404 + ... + 4738487.

It is an arithmetic number, because the mean of its divisors is an integer number (56861352).

Almost surely, 2^398029422 is an apocalyptic number.

398029422 is an abundant number, since it is smaller than the sum of its proper divisors (511752210).

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

398029422 is a wasteful number, since it uses less digits than its factorization.

398029422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476903.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 398029422 is about 19950.6747254322. The cubic root of 398029422 is about 735.5943621255.

The spelling of 398029422 in words is "three hundred ninety-eight million, twenty-nine thousand, four hundred twenty-two".