83890398 has 16 divisors (see below), whose sum is σ = 169443216. Its totient is φ = 27686400.

The previous prime is 83890397. The next prime is 83890439. The reversal of 83890398 is 89309838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83890397) 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, 68611 + ... + 69822.

It is an arithmetic number, because the mean of its divisors is an integer number (10590201).

Almost surely, 2^83890398 is an apocalyptic number.

83890398 is an abundant number, since it is smaller than the sum of its proper divisors (85552818).

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

83890398 is a wasteful number, since it uses less digits than its factorization.

83890398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138539.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 83890398 is about 9159.1701589172. The cubic root of 83890398 is about 437.7613532841.

The spelling of 83890398 in words is "eighty-three million, eight hundred ninety thousand, three hundred ninety-eight".