398117622 has 16 divisors (see below), whose sum is σ = 909983232. Its totient is φ = 113747880.

The previous prime is 398117591. The next prime is 398117633. The reversal of 398117622 is 226711893.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4739454 + ... + 4739537.

It is an arithmetic number, because the mean of its divisors is an integer number (56873952).

Almost surely, 2^398117622 is an apocalyptic number.

398117622 is an abundant number, since it is smaller than the sum of its proper divisors (511865610).

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

398117622 is a wasteful number, since it uses less digits than its factorization.

398117622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9479003.

The product of its digits is 36288, while the sum is 39.

The square root of 398117622 is about 19952.8850545479. The cubic root of 398117622 is about 735.6486919711.

The spelling of 398117622 in words is "three hundred ninety-eight million, one hundred seventeen thousand, six hundred twenty-two".