398895622 has 16 divisors (see below), whose sum is σ = 613554480. Its totient is φ = 194439168.

The previous prime is 398895587. The next prime is 398895659. The reversal of 398895622 is 226598893.

It is a happy number.

It is a super-4 number, since 4×398895622⁴ (a number of 36 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398895622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2347 + ... + 28342.

It is an arithmetic number, because the mean of its divisors is an integer number (38347155).

Almost surely, 2^398895622 is an apocalyptic number.

398895622 is a deficient number, since it is larger than the sum of its proper divisors (214658858).

398895622 is a wasteful number, since it uses less digits than its factorization.

398895622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30855.

The product of its digits is 1866240, while the sum is 52.

The square root of 398895622 is about 19972.3714666036. The cubic root of 398895622 is about 736.1275808194.

The spelling of 398895622 in words is "three hundred ninety-eight million, eight hundred ninety-five thousand, six hundred twenty-two".